There were some good things in the C-rations (US Army, 1973-1982). My favorite was the chocolate disk. The canned food needed to be heated to taste good. Our mess hall used metal trash cans and immersion heaters to heat the cans. When we were in the field we would get them for lunch. There was no way we could heat them without getting in trouble and they did not taste very good then. The store bought MREs I have tried are not very good! I'd rather have C-rations.