Never Cook These Foods In Aluminum Foil—Here’s What To Do Instead
Aluminum foil is a staple in almost every kitchen. It's so convenient for wrapping up leftovers or lining a baking sheet to save time on cleanup. Many people use it for absolutely everything without giving it a second thought.
However, foil is not a one size fits all solution for every ingredient. Some foods react poorly to the metal, affecting both the taste and your health.
Tomatoes
If you're roasting tomatoes or simmering a heavy tomato sauce, keep the foil away. The high acidity in tomatoes actually eats away at the aluminum surface through a chemical reaction.
You might notice little white spots on the foil or a metallic tang in your food. This means the metal is leaching directly into your meal. It's much safer to use a glass baking dish or a ceramic pot instead.
Seafood
When it comes to cooking seafood dishes, skip the foil. Research shows that seafood is likely the worst protein to cook in foil. This is because the aluminum can leech deeper into fish than it can into mammals or poultry.
It's much safer to cook fish using parchment paper in order to prevent the metal from leeching into your food.
Salty dishes
Salt is a powerful mineral that can actually corrode aluminum over long periods of time. If you're marinating meat in a salty brine or storing very salty leftovers, the foil can develop tiny pinholes. This is a sign that the metal is moving into your food.
For anything with a high salt content, I recommend using stainless steel or glass dishes. It keeps your food fresh and your foil intact.
Vinegar-based marinades
Many of our favorite marinades for chicken or steak rely on vinegar for tenderness and flavor. Unfortunately, vinegar is another acidic liquid that reacts poorly with aluminum foil.
It's much better to use a zip-top plastic bag or a deep glass bowl when marinating your food. This ensures that only the intended flavors soak into the meat.
Citrus fruits
Lemon and lime are wonderful for brightening up a dish, but they don't play well with foil. Just like tomatoes, the citric acid can cause the aluminum to dissolve into your ingredients.
If you need to cover a citrus dish, try using parchment paper or a reusable silicone lid. These options keep the bright flavors pure and metallic-free.
Slow-roasted dishes
When it comes to slow-roasted meat or casseroles, foil is not the answer. The slow roasting process can cause the aluminum to leach into your food.
For a safer option, switch to ceramic or glass cookware. If you do need to use aluminum foil, add a layer of parchment paper between the aluminum to prevent it from coming in direct contact with the food.
Cookies
Baking cookies on a foil-lined tray is less of a safety hazard and more of a risk to the quality of your treats. Cookies are baked quickly at low temperatures, but foil can make the bottoms overly crispy. They may also stick to the foil, causing a crumbly mess when you remove them.
Parchment paper is your best bet for lining a tray of cookies before you stick them in the oven.
It takes a little bit of practice to reach for the parchment paper instead of the foil roll, but the peace of mind is worth the extra effort.
Understanding how our tools interact with our food is just another way we can take care of ourselves and our families. I hope these tips help you feel more confident and safe in the kitchen.