Scott O'Grady mentions in his book, Return With Honor, that once aboard the helicopter after being rescused, he was offered an MRE (Meals Rejected by Ethiopians). In spite of the fact that he had been without food for a number of days, he took a taste and passed on the rest. This was after eating ants and drinking water he squeezed from the socks he was wearing.
I guess MREs are an acquired taste, not to be found in the Officer's Mess.