In James Michener’s Poland (1983), a Polish peasant in a concentration camp tries to survive by thinking about food (p. 532 of the paperback):
He then transferred his imagination to a supper served at the wedding of a well-to-do farmer, where huge platters of sauerkraut, sausage, boiled pork and pickles had been provided, one to each of six tables, and he had helped himself piggishly, moving from one to the other so as not to reveal his gluttony. Â He recalled this particular feast for two reasons: as a peasant, he knew that the acid bite of the pickled kraut was good for him, all peasants knew that and it was one reason why they survived so long; and he could see in the rich fat of the meats the strength that came from them.
Later he thinks about animal fat:
He imagined himself luxuriating with platters of butter, or grease, or pork drippings, or oil that rich people bought from Spain, or the golden globules at the edge of a roast, or plain lard.
According to Wikipedia, Poland was based on “extensive study of Poland’s history and culture.” Thanks to Nadav Manham.