Astronaut Food - Neopolitan Ice-Cream - Games, Puzzles & Learning. Eat the same food Nasa Astronauts eat on space missions. The foil sachets contain freeze dried ice-cream which last almost indefinitely, making it suitable for long space flights. As they are eaten, saliva in the mouth re-hydrates the ultra-light chunks, returning them to their original state. (Warm ice cream is particularly strange.)