When disaster strikes, what kind of meals are available at Japanese evacuation shelters? In the vast majority of cases, they consist of rice balls, snack breads, and bento boxes. It is not hard to imagine that consuming a menu like this for a month or more would be harmful to one's health. In tough situations, diet inevitably becomes a secondary consideration. However, diet is too important to allow any time to be lost in tackling this issue. A radical rethink of food in such situations is required to prepare for the disasters likely to strike in the future.