Which of the following foods cannot be stored in water or ice?

The food that cannot be stored in water or ice is milk. When milk is stored in water or ice, it can lead to dilution and potential contamination. Water can introduce harmful bacteria or other contaminants into the milk, compromising its safety and quality. Additionally, both water and ice can affect the texture and flavor of milk, making it less desirable for consumption.

On the other hand, fish, vegetables, and shellfish are often stored in water or ice to maintain their freshness and prevent spoilage. This method helps to keep these foods at safe temperatures and slows down the growth of harmful microorganisms. It is important to ensure that any ice or water used for storage is clean and safe to prevent cross-contamination, but these foods are generally safe to store in such conditions.