...not all the rations were bad...

As I recall the LRRP rations (short for Long Range Reconniassance and Patrol, and pronounced "lurp rations") weren't bad at all. They were dehydrated entreés in a sealed heavy plastic bag, just boil up some water and mix, and presto -- a hot meal ready to eat. Rather on the salty side, but quite tasty otherwise. There was chili, and beef stew, and something with noodles, and a few others. This was 1969, and I think a civilian version went along with the astronauts, including to the moon.