If airplane food doesn't taste good, it seems like a safe assumption to make that space food tastes exponentially grosser. However, this could be completely incorrect as astronaut food is being sold in vending machines in Russia. Specifically, Moscow's All-Russian Exhibition Center offers 11 different kinds of meal tubes to visitors. The food inside these tubes is made using the same technology as real cosmonaut food.
Sputnik News reports the space food tubes come in varieties including meats, desserts and even soups. There seems to be a loose correlation between the yogurt in a tube that were all the rage in the late 1990s. Perhaps the astronaut appeal is what makes these food tubes a hit in the former Soviet Union.