Aluminum foil is generally suitable for storing many types of food, especially for wrapping and cooking purposes. It's excellent for sealing in moisture and flavor, and it can be used in cooking and baking. However, it's not recommended for storing acidic foods like tomatoes or citrus fruits, as they can react with the aluminum and potentially leach aluminum into the food. Additionally, foil should not be used with foods that require a long-term, airtight seal, as it can tear or allow air to enter over time. For best results, use aluminum foil as directed and consider the specific needs and properties of the food you're storing.