Can I use aluminum foil as a substitute for plastic wrap in food storage containers?

Yes, aluminum foil can be used as a substitute for plastic wrap in food storage containers. It effectively seals in freshness and prevents air exposure, which is similar to the function of plastic wrap. However, aluminum foil is not airtight and may not be as effective in preventing the escape of odors or the entry of bacteria as plastic wrap. Additionally, it is not microwave-safe and can be less convenient for re-sealing. It's also important to ensure that the foil does not come into direct contact with acidic or alkaline foods, as this can lead to a reaction and potential contamination.