Aluminum foil is not recommended for storing rice. While it is a good conductor of heat and can be used for cooking, it is not an ideal material for long-term storage of food items like rice. Aluminum foil can react with acidic or alkaline foods, potentially leaching aluminum into the food, which is not safe for consumption. Instead, use airtight containers made of glass or food-grade plastic to store rice and keep it fresh. These materials are more stable and less likely to contaminate the food.