Flaki (Polish:[ˈflaki]ⓘ) or flaczki ([ˈflat͡ʂki]ⓘ) is a traditional Polishtripestew. It is one of the many Polish soups, which represent an important part of Polish cuisine.[1][2] Along with bigos, żurek, and pierogi, it is one of the most notable specialities in Polish cuisine.[3][4] Its name is derived from its main ingredient: thin, cleaned strips of beef tripe (in Polish: flaki - which can also be literally translated to "guts").
^Friedel, Mieczyslaw W. (1978). This Polish blood in America's veins: sketches from the life of Polish immigrants and their descendants in America, illustrating a part of American history unknown to most Americans. Vantage Press. p. 20.