Following this question and other food-related questions, including on Quora, I failed to see mention of a meal without meat or fish. I suppose:
- It is technically possible to have healthy vegetarian space food?
- As any other human being, astronauts may have alimentary restrictions (whatever the reason).
Has there already been an astronaut who ate vegetarian for all their journey in space? Let's restrict this question to journeys longer than one day (otherwise, not eating would be valid).