Menudo is a traditional Mexican soup, made with beef stomach (tripe) in broth with a red chili pepper base. Usually, hominy, lime, chopped onions, and chopped cilantro are added, as well as crushed oregano and crushed red chili peppers. Menudo is usually eaten with corn tortillas or other breads, such as bolillo. It is often chilled and reheated, which results in a more melded flavor. Menudo is time intensive, taking four to seven hours to make. Modern supermarkets who sell beef tripe offer a version of this meat which has been previously processed by scalding it in very hot water, which significantly reduces cooking time by several hours.
In its simplest form, beef tripe is rinsed clean then boiled for two to three hours in a large pot with an onion cut in half, then the tripe is removed from the pot and allowed to cool before being cut into strips or cubes and the onion half is discarded. The water is removed and discarded, then the tripe is then placed back into the pot and fresh water, oregano, red chili paste or powder, lime/lemon juice, and salt are added and boiled over low heat for another hour until the tripe is tender, after which hominy is added then allowed to cook an additional half hour until done.