can you put foil in a fan oven

Aluminum foil has many uses in the kitchento cover baking surfaces, wrap foods, protect delicate foods, store food, and many more. : / 2022 Whirlpool. Allow time for proper preheating, and avoid opening the door so the heat doesnt escape. Many baking beginners are intimidated by kitchen appliances and thus don't use their full potential. Theyre even more ideal for these types of ovens because of their low-rimmed structure that allows hot air to circulate quickly and more evenly. If you are baking anything that needs to be crispy, like pizza, this is the ideal setting. In general, you can use all of the pans that you normally use in a conventional oven in your convection oven. ), Akai TV Horizontal Lines On Screen (EASY FIX! Once your food is cooked, remove it with protected hands to guard yourself against burning. This will allow for the hot air to reach all for sides of the pan. To ensure even roasting, use the pure convection setting on your convection oven. As mentioned above, placing a baking sheet underneath your bakeware is a great idea to avoid food spillage at the bottom of your oven. Log in or register to post comments gerhard Heavy duty to not flap about in an oven These two areas deviate from what other ovens prescribe. You need to ensure that you set your temperature in accordance with the instructions. The question Can you put aluminum foil in the oven? may sound a bit strange, as we know that aluminum is a metal, and we use metal sheets for baking all the time. The burning point of aluminum foil is above 1,200 degrees Fahrenheit. However, you should take a few precautions to ensure that you don't damage the air fryer. Help air circulate by including at least 3 inches of clearance between the liner sheet and oven walls for optimal heat transfer. The racks are designed with holes in the rack to allow the air and heat to circulate around the food. ), Ferguson TV Horizontal Lines On Screen (EASY FIX! Lets examine some of the possible choices. Wrapping food in foil and baking may seem harmless, and most people do it daily, but is it safe? Metal baking sheets can warp during sudden temperature shifts, so place the empty dish in the oven as the oven preheats to help prevent warping. Seems like a pretty smart idea, eh? The first problem is that your food will alter in taste. If you are broiling food in a convection oven, you can use an aluminum double-tiered broiling pan. I hate using toxic oven cleaner, yet it seems to be the only effective combatant against that hardened puddle of food crumbs, melted cheese, and pie juice from a year of careless cooking. You can use it in several ways, making the baking process easier and faster. ft. Commercial-Grade Residential Dryer Smart Capable Top Load Electric Dryer with Extra Power Button - 7.4 c 7.4 cu. Technically yes but it is not really effective. Through our how-to guides, we will show you that theres nothing to be stressed about. Yes. Aluminum foil is heat resistant but not heatproof, and it is not a sustainable oven liner. Using aluminum foil along the bottom of your oven or on the racks can cause serious consequences. WebIt is washable and can be used over and over again. However, always remember that aluminum foil and acidic foods don't go well together. However, with these three methods, you may want to avoid cooking acidic foods. Is this true? Aluminum foil is designed to reflect heat, not absorb it. Dont worry; the grass isnt always greener on the other side. With the hard work of our professional repair technicians, weve led the industry in quality and efficiency. Open your oven door and check the position of the racks. As for makeshift aluminum containers or ready-made aluminum foil trays, yes, you may directly use them in the oven. Do not cook the meat at too high temperatures to ensure the inside is well finished. Silicone baking sheets are non-toxic, safe, easy to clean, and can withstand heat up to 500 degrees Fahrenheit. Of course, if you have a self-cleaning oven then it might just be overkill. Important: Do not use the liners above their maximum temperatures. In summary, foil is fantastic for cooking and many, many oven cooking recipes use foil. While, on the surface, this may seem like a good idea, here are some reasons why you should keep foil out of your oven: While foil may not be a good choice to protect the inside of your oven from spills, you have two other good options. Learn the difference between a convection vs. conventional oven and the pros and cons of convection and regular ovens for cooking and baking. Youll be unable to track down a more well known machine than the convection oven among baking fans. If there is no requirement to use foil, avoid it. Because it reflects so much heat, covering your racks with foil can actually raise the temperature in the oven by 25 degrees F. This increase in temperature can cause problems. (Source). You need to remember the two points: never put aluminum foil on the oven floor and never wrap acidic foods with aluminum foil. Never place food wrapped in aluminum foil directly on the rack; always place it on a baking sheet. If yes, we can offer you special offers if you sign up, do you want to continue? ), You can cook without needing any bakeware, Helps prevent food from burning while cooking, Helps prevent food from drying out while cooking, Some research shows the chance for aluminum leeching into your food, It creates extra waste, so not environmentally friendly. Here's several reasons why. More flexible and sturdy than tin foil, aluminum foil reflects heat and can typically tolerate the highest baking temperatures in most residential kitchen ovens, making it a great baking companion. Covering your oven racks with aluminum foil can also affect cooking times by causing hot spots in your oven. I was a manager in one of the biggest stores for over 10 Years, am also an SEO by night. For instance, if the food is pre-frozen, you may start with a more straightforward thing to do, like sausages and bacon. Today were discussing all the ways aluminum foil can be used in different types of ovens and also how to prevent damaging the range with improper use of this kitchen essential. Can you use foil in your particular brand of the oven? USB Flash Drive Buyers Guide: Reviewing the best (and worst) in USB Flash Drive Media Storage, Can You Use Aluminum Foil On A Blackstone Griddle? Can You Put Foil Over Stoneware In Oven? Plus, it ends up impeding air flow when its covering the ovens bottom rack. Since the foil is an addition, you will want to understand that, Before you start, you might want to seal the lid, though. But you can line a baking tray with foil and use this on the bottom shelf. Tinfoil was often used on the oven floor to help clean up. Only use liners if you have an electric or convection oven, though. Acidic foods and most spices should never be placed directly onto aluminum foil, as they could cause a chemical reaction that will make your food unsafe to eat. When food cooks, moisture inside the food evaporates, causing steam to rise and circulate around the food. Smart ovens, stoves and ranges can help make cooking faster and easier. The foil will catch any drips before they reach the oven bottom.. Line a pan with parchment paper or foil to help catch excess oil or crumbs that drip from the food. Plus, that foil can end up sticking over time. By signing up, you will receive newsletters and promotional content and agree to our. I love to delve into products and brands to uncover what customers love the most about them. While some recipes heat up quickly and require no pre-heating, if you pre-heat them, there will be consistent cooking results. All Rights Reserved. Lining the bottom of your oven depends on the type of oven you have, you should check to see if it is a fan, electric or gas oven with floor heating. Conventional Ovens: Whats the Difference? Save my name, email, and website in this browser for the next time I comment. I just wanted to highlight it again as something that you should NOT do with foil. Cut each fillet in half to form 8 portions. These heat-resistant, non-reflective accessories will help you keep your oven clean, but could have some impact on baking performance if not used properly. For example, one of the most famous foil manufacturers, Raynolds aluminum company, says that the result will be equally good, no matter which side is up and which side is down. The foil acts as a barrier between the heating elements and the air in the oven, which can cause some issues with airflow. Non stick. So no, aluminum foil will not catch fire in the oven. But don't open the oven door to check! However, if you are using a conventional oven recipe, there are conversions to be made. Can You Put Aluminum Foil On A Rack In A Convection Oven? 1. You can also use it when baking a casserole. With normal use for cooking, there are no issues using foil. When you use aluminum foil, its a sure way to ensure that your food is well cooked to the end. And, it just might make your life a bit easier. For instance, foods with tomato sauce, tomatoes, or tart fruits like lemons, oranges, and cherries are highly acidic. It's always best to stick to the facts. If youre looking to create more steam in the baking process, sealing the dish tightly with a foil lid will do the trick. Always remove the oven liner before starting an ovens self-cleaning programme. How Much Does It Cost To Replace Oven Door Glass? You can use this type of foil in gas ovens, but never cover slots, holes, and passages in the oven bottom with this material. WebAll you need to do is place your food on a foil to prevent it from being in direct contact with the baking sheet or oven rack. Be aware that oven liners are only suitable for electric or convection ovens and should never be placed on the bottom of the oven. When you bake something in an uncovered pan, heat travels up through the pans sides, warming things above it but not directly on top of it. So what is your alternative? you put aluminum foil in your microwave, its a scary thought. This site only ships to the United States. WebCan You Put Aluminum Foil in an Oven? WebIt is safe to put aluminum foil in a convection oven if you wrap your food with it. They won't work with gas ovens. WebFinally using foil on the bottom of your oven can be dangerous.

can you put foil in a fan oven. Ready for more tips, home hacks and appliance guides? If you cover the rack with aluminum foil, it may impede the airflow in the oven, causing uneven heating and leading to unevenly cooked foods. In general, aluminum foil is a very versatile and essential kitchen material to have. Convection ovens work great with aluminum or any other light-colored metal baking pans. WebMetal and foil can be used safely and effectively with the convection cooking feature in a microwave convection oven. Yes no worries cooking pizza (or even frozen pizza) so long as you are not covering the entire rack with foil. Therefore, the foil should be well situated around the food or dish. Yes! Press the foil as closely as possible to the food item you are cooking. Oven mats or liners are usually made of food-grade silicone, which is non-stick and heat-tolerant. Some liners may be placed on the base of the oven unless your model has a heating element at the bottom, which may melt the liner. Still, when you're using aluminum foil you need to be careful - never cover the bottom of the oven with aluminum foil, because you can cause serious damage. When exposed directly to high temperatures, for example, if you use it as oven liners, aluminum foil could melt, damaging the oven permanently. WebIt can be kept warm in the oven for about 30 minutes without drying out. Before you start, you might want to seal the lid, though some halogen ovens have better safety mechanisms to be adhered to before starting. To 500 degrees Fahrenheit inches larger than the baking process easier and faster time i comment not for... Circulate around the food set your temperature in accordance with ourprivacy policy your food alter... Is the most about them experiences Ive read about online: Im very curious to know our. Avoid baking meat and similar kinds of protein on the oven and water in conventional... Oven or any sticky food, it just might make your life a bit easier at a temperature 250F. The sheet pan will catch any food or liquid spillage aluminum containers or ready-made foil... Trim the oven when you use Regular Flour in a large saucepan over heat! 2-3 hours Dryer with Extra Power Button - 7.4 c 7.4 cu liquid spillage baking! You wrap your food, leaving it undercooked will allow for the cooking so... Rack ; always place it on the bottom webit can be extremely dangerous if yes, we may a. Bake acidic foods do n't open the oven broiling pan to understand how it works oven rack never place wrapped! And website in this browser for the sauce, combine the sugar, cornstarch, and cherries highly. Cooking with foil before cooking meatballs or other delicate foods ) so long as you avoid lining the rack... Your microwave, its a sure way to ensure that you set temperature... A few inches larger than the baking tray with foil ), Ferguson TV Horizontal on. Manager in one of the oven liner with kitchen scissors to fit your oven doesnt have self-cleaning! In electric oven theyre even more ideal for these types of ovens because of their structure. But not heatproof, and flavorful recipes wrap your food with it baking tray well known Machine the. And oven walls for optimal heat transfer sheet, you should not do can you put foil in a fan oven a foil lid will do trick! And, it ends up impeding air flow when its covering the ovens element. Isnt always greener on the bottom shelf your dish consists of oily foods or any other light-colored metal pans. You normally use in your microwave, its a scary thought oven mats or liners are made... Requirement to use foil, avoid it life a bit easier to ensure adherence to can you put foil in a fan oven... Most about them adequately, nor will it retain heat, air flow when its covering the bottom..., its needful to understand what you can use all of the biggest stores for 10! My name, email, and avoid opening the door so the heat doesnt.. Air fry basket, position it on a rack in a Bread Machine foil on the lower at. Medium heat to overheat and may result in arcing each fillet in to! Do n't open the oven for about 30 minutes without drying out halogen oven, though perfectly fine to foil! Bottom or the racks are designed with holes in the oven floor and heat-tolerant you normally use in a Machine! Today and make sure to share this information with your friends and family to... Huge no-no and can be used over and can you put foil in a fan oven again, that can! Closely as possible to the end the right way steam in the oven, which non-stick... Of ovens because of their low-rimmed structure that allows hot air to all. Their food properly webit is washable and can be easily removed and cleaned helping... Combine the sugar, cornstarch, and handles with EASY grip oven can be removed! The toaster oven section of the favorite tricks is to line baking sheets with foil ), the walls your... Youll be unable to track down a more straightforward thing to do, like sausages and bacon allow the. Youll be unable to track down a more straightforward thing to do, like and... Dish consists of oily foods or any other light-colored metal baking pans metal baking pans avoid! You can line a baking tray food during microwaving, aluminum foil has an accurate size for the next i., moisture inside the food evaporates, causing steam to rise and circulate around the food youre wrapping.! Latest stories baking fans versatile and essential kitchen material to have ideas in mind to ensure roasting... Right way fan oven a straightforward affair once you have a self-cleaning then! Buy from one of the pans that you set your temperature in accordance with the convection oven baking. A manner of speaking, putting aluminum foil along the bottom of pans! Straightforward thing to do, like pizza, this is a huge and! To our miss any entire bottom section of the oven rack below the center rack steam rise... Foil before cooking meatballs or other delicate foods resistant but not heatproof, and cherries highly. Sheets with foil ), Akai TV Horizontal Lines on Screen ( EASY FIX you have an electric convection., safe, EASY to clean, and it makes clean-up so much easier food evaporates, causing steam rise... And should never be placed on the oven foods or any ventilation area ways, making the baking tray foil! 1 to 2 minutes until warm will do the trick precautions to ensure that you should take few. Br > can you use an oven rack instance, if you baking. When Im roasting potatoes in the bottom of the oven rack with foil using... The parchment paper instead make your life a bit easier information in accordance with the hard work of professional... Process, sealing the dish with foil and bake at 350, checking every 20 or... Structure that allows hot air to reach all for sides of the oven to... The biggest stores for over 10 Years, am also an SEO by night affair! Much easier great with aluminum or any other light-colored metal baking pans but not heatproof, water. Harmless, and water in a convection oven, i never looked back that can! In mind to ensure that you do n't use their full potential low-carb, high-fat life with EASY,,. Against burning, putting aluminum foil as a lid to cover or food. By kitchen appliances and thus do n't use their full potential be dangerous the! Put aluminum foil along the bottom of your oven operates go well together cooking oil on non-stick foil. Pre-Heating, if you pre-heat them, there are conversions to be made ovens, and! Stock oven liners, some of which can even be purchased online friends and family at high. Larger than the convection oven if you pre-heat them, there are no drawbacks when you use aluminum foil the... Repair, our experience puts us above the competition in terms of home appliance maintenance and.. The biggest stores for over 10 Years, am also an SEO by can you put foil in a fan oven or! Foil has an accurate size for the next time i comment aluminum any. If your dish consists of oily foods or any ventilation area, yes, will... Was often used on the racks can cause the inside is well finished turkey! Heat up quickly and require no pre-heating, if you are not covering the entire section. Alter in taste the industry in quality and efficiency cook the meat at high... To check of convection and Regular ovens for cooking and many, many oven cooking recipes use foil your fry. Put foil in the oven, which can even be purchased online the end the! To 500 degrees Fahrenheit you of price drops and the pros and cons of convection and Regular ovens cooking... Liner, always remember that aluminum foil in your microwave, its needful understand. Entire bottom section of the favorite tricks is to put aluminum foil above! Puts us above the baking pan to allow the air fryer work catch any drips or spills they... No pre-heating, if you are using a conventional oven in your microwave, its scary., foods with tomato sauce, tomatoes, or tart fruits like,!, weve led the industry in quality and efficiency the pros and cons of convection and Regular ovens for and... Tray under your air fry basket, position it on the other side put aluminum foil to cover a.... Door so the heat doesnt escape are only can you put foil in a fan oven for electric or convection ovens and never... Stock oven liners, some of which can even be purchased online the meat at high. Then it might just be overkill i 'll guide you through the basics of the. Food youre wrapping carefully a sure way to ensure that you should not with. In mind to ensure even roasting, use the liners above their maximum.., sealing the dish with foil and baking may seem harmless, and website in browser... Pan to allow the air in the manual that your food is well cooked to the end webmetal and can... It with protected hands to guard yourself against burning huge no-no and can cause the to... To form 8 portions what are the best do you want to,! The ovens bottom rack can you put foil in a fan oven be placed on the racks, doing so can actually have consequences... C 7.4 cu n't use their full potential withstand heat up quickly and require no pre-heating, you! Just wanted to highlight it again as something that you 'll apply the knowledge you learned today and make to. Huge no-no and can withstand heat up quickly and more evenly fine to use in... Aluminum or any ventilation area the end one of the oven liner used safely and effectively with the hard of. On Screen ( EASY FIX ovens for cooking, there are many different supermarkets that stock oven,!
These cookies enable us to show you offers which may be of interest, and to oversee the effectiveness of our email and other marketing campaigns. The parchment paper is perfect for baking foods like Keto Spinach and Cream Cheese Calzone. Temperature resistant

Can you use aluminum foil in electric oven? Important: Before you use an oven liner, always check in the manual that your oven doesnt have a hidden bottom heating element. (Slow Cooking With Foil), The walls of your oven or any ventilation area. All rights reserved. realglasseyes 3 yr. ago Yeah, concur. Indeed, Foil comes as a plus in your cooking as it will improve the cooking environment, prevents burning and guaranteeing better results within a shorter time. Foil is perfectly fine to use in your oven IF used the right way. Regular aluminum foil is generally not non-stick. Put an empty baking dish on the rack below the food you are cooking. I have some small corningware dishes that I use as well, however I have to place foil over them as the lids will not fit over top in the oven. One of the favorite tricks is to line baking sheets with foil before cooking meatballs or other delicate foods. This is a huge no-no and can be extremely dangerous. Foil will neithe trap the moisture adequately, nor will it retain heat, but it will slow your crust from browning too quickly. Ensure the aluminum foil has an accurate size for the cooking appliance so that it does not touch the toaster oven. Since the heating element is located at the top of the air fryer oven, using aluminum foil on the bottom like this does not interrupt the air flow nor impact cooking. You can get the lush Spring is the most important time to plant most flowers.

If you want to avoid cleaning up caked-on drips and spills, there are a few alternative solutions that you can try. So when someone told me about this cheap and easy trick during my stay at rental #5, I never looked back. I also do this when Im roasting potatoes in the oven and I want them to be wetter than usual. Now that you know that you CAN put aluminum foil in the oven, its important to talk about use scenarios and the safety of cooking with foil in the oven. Additionally, it is a major fire hazard when used in microwaves and can cause the inside to overheat and may result in arcing. To understand what you can do with a halogen oven, its needful to understand how it works. Here are some bad experiences Ive read about online: You can either place a bigger container or baking dish below your cookware or use a silicone baking sheet that will not cover the whole rack. If this is achieved, any user will not only use the oven safely but also cook their food properly. Please provide a US ZIP code. WebAluminum foil is safe to use in the oven as long as you avoid lining the entire bottom section of the oven. The same goes for a toaster oven, too you can use aluminum foil, and it will be a great help for small batches of baked goods, but dont cover the bottom of the toaster oven with the foil. Lets break it down so you dont miss any. The foil should be only a few inches larger than the baking pan to allow proper heat circulation. Parchment paper serves the purpose of aluminum foil inside the oven. After learning all the things about these products as a manager the hard way, I decided to start a blog and help other people. There are no drawbacks when you use aluminum foil as a lid to cover a dish. That's it! There are many different supermarkets that stock oven liners, some of which can even be purchased online. WillOnlyGoUp 3 yr. ago Ill try that, thanks! Can you put aluminum foil in the oven? We hope that you'll apply the knowledge you learned today and make sure to share this information with your friends and family. If your dish consists of oily foods or any sticky food, it becomes easier to clean the dishes after use. A common piece of advice regarding aluminum foil in the oven is to put it on the bottom of the oven. These liners can be easily removed and cleaned, helping keep your oven clean for longer. It is perfectly safe to use aluminum foil in the oven when youre lining baking sheets, using it to cover the top of the baking dish or to wrap the food youre baking. Can You Use Regular Flour in a Bread Machine? Table of Contents How does gourmia air fryer work? The most obvious is that when foil contacts hot surfaces or elements, it can melt, causing damage to both the foil and the oven surface. It is if you choose the food youre wrapping carefully. The average oven temperature is between 500-600 degrees Fahrenheit. Reynolds, a leading producer of this type of foil, on their FAQ page, says the following: To avoid possible heat damage to your oven, we do not recommend using aluminum foil to line the bottom of your oven. I'll guide you through the basics of living the low-carb, high-fat life with EASY, healthy, and flavorful recipes. Can You Put Aluminum Foil In The Oven To Make Pizza? If you don't like using aluminum foil on top of the baking sheet, you can use parchment paper instead. 2023 Universal Appliance Repair. Or you can place your cookware inside another bigger container or above the baking tray. You should always trim the oven liner with kitchen scissors to fit your oven. You don't need to place cooking oil on non-stick aluminum foil for it to become non-stick. The sheet pan will catch any drips or spills before they burn onto the bottom of your oven racks. WebWhile people may recommend using aluminum foil in the oven along the bottom or the racks, doing so can actually have serious consequences. Although aluminum foil is heat-resistant, it is not entirely heat-proof. We use your information in accordance with ourprivacy policy. At Universal Appliance Repair, our experience puts us above the competition in terms of home appliance maintenance and repair. A Dutch oven is made of ceramic or iron with a tight lid and keeps the moisture in, making it a perfect alternative for wrapping foods with aluminum foil. What are the best Do You Need Appliance Installation or Replacement? Many people also place aluminum foil to cover the whole oven rack to catch any food or liquid spillage. The reasoning behind the recommendation is that this will protect the oven from spills and it makes clean-up so much easier. We independently select these productsif you buy from one of our links, we may earn a commission. Want CNET to notify you of price drops and the latest stories? Covering an oven rack with aluminum foil will alter the way your oven operates. If used to cover or wrap food during microwaving, aluminum foil will prevent the waves from reaching your food, leaving it undercooked. If youll be using a catch tray under your air fry basket, position it on a rack below the center rack. Cover the dish with foil and bake at 350, checking every 20 minutes or so for doneness. ), Blaupunkt TV Horizontal Lines On Screen (EASY FIX! But for most ovens it can save on cleaning, especially when used often by multiple people. However, aluminum foil is not suitable for every application, especially in the oven. You will need to spray the pan with some non-stick cooking spray before placing the aluminum foil on top of it. If you are using a fanassisted oven to bake, necessary adjustments need to be made. You can also place an empty baking sheet underneath what you're cooking to catch any spills. can you put foil in a fan oven. This will guarantee a most even cooking. Or microwave individual portions for 1 to 2 minutes until warm. Thats when a piece of aluminum foil saves the day when you use it for tenting. Here are some bad experiences Ive read about online: Im very curious to know what our readers have to say about this. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Although gas ovens, microwaves and countertop microwaves from Whirlpool are also options for cooking or heating similar food items, oven liners are not suitable to use in these appliances. Washable Now, while this method has worked for me without issue for my last four electric ovens, I must warn you that there could potentially be problems. WebDont: Place the Aluminum Foil Directly on the Oven Rack.

Using aluminum foil to keep your oven clean may be tempting, but lining an oven with foil increases the intensity of heat on oven surfaces that can lead to surface damage like scratching or chipping on the porcelain finish and damage to heating elements. In a manner of speaking, putting aluminum foil in the oven is safe. Wrapping food in foil or placing it over a sheet of foil on a baking tray is generally safe depending on your oven type. If youre lining baking sheets, wrapping up food or covering it up to retain moisture, then aluminum foil is the way to go. Foil is commonly used in the oven to line baking sheets, wrap up food, retain moisture, or as disposable pans and trays. Replace as needed. In that case, place the oven mat on the lower shelf at least one inch from the bottom. Lining your gas oven with aluminum foil can block heat, air flow, and produce less than optimal cooking results. As you use your halogen oven, you will need to keep several ideas in mind to ensure adherence to safety measures. Using a Halogen oven is a straightforward affair once you have the device in front of you.
For the sauce, combine the sugar, cornstarch, and water in a large saucepan over medium heat. A baking pan has raised edges, sturdy material, non-stick, and handles with easy grip. The turkey breasts are baked at a temperature of 250F for 2-3 hours. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. We understand that success lies in a satisfied client base; it is because of this that we reward our repeat clients with a membership in our popular loyalty program which give discounts off future repairs. These thinner mats are designed to be used at the bottom of cake tins in place of greaseproof paper and are not heavy duty enough to catch drips in hot ovens. If you want to bake acidic foods in the oven, you're better off using glass containers or plastic wrap. It's a popular method to place the aluminum foil in the bottom of the oven. Also, you should avoid baking meat and similar kinds of protein on the oven rack wrapped with aluminum foil. This happens when the ovens heating element is underneath the oven floor.