They can eat whatever they want as we see on the pictures! 80% of food for astronauts is developed at the Research Institute of Food and Concentrate Industry of the Biryulyovsky experimental plant. Over 300 cosmic dishes developed in general. Each & Read more...

http://englishrussia.com/2019/04/06/pizza-ice-cream-and-mayo-salad-what-russian-astronauts-eat-in-space/