Aluminum foil can leach into food when it’s heated up in a fire, on a grill, or on a stove, but not likely after one use. If it’s used multiple times to cook with, then it’s more likely. Acidic foods (vinegar, lemon juice, ketchup) speed up process of aluminum dissolving into food, and will even happen at room temperature, but only with acidic foods. In the fridge with non-acidic food, it’s fine.
Aluminum foil can leach into food when it’s heated up in a fire, on a grill, or on a stove, but not likely after one use. If it’s used multiple times to cook with, then it’s more likely. Acidic foods (vinegar, lemon juice, ketchup) speed up process of aluminum dissolving into food, and will even happen at room temperature, but only with acidic foods. In the fridge with non-acidic food, it’s fine.