Menudo (soup) hours, the tripe should be added along with salt, an onion cut in half, and one or two heads of garlic. Red menudo has the addition of Guajillo chili paste. The menudo is allowed to continue boiling for an additional three hours while covered. Once it is almost done, the hominy is added. There are a number of regional variations on menudo. In northern Mexico, typically hominy is added. In northwest states such as Sinaloa and Sonora usually only the "blanco," or white, variation is seen; "menudo blanco" is the same dish, with the difference that red pepper is not
Gopchang-jeongol chili peppers are seeded and chopped and onions and carrots are chopped into pieces the same size as the peppers. Scallions are cut into long diagonal strips. In a pan, the remaining vegetables are placed on the bottom, and the marinated beef tripe and brisket are placed over them in a circular fashion. The shredded mushrooms and sliced vegetables are arranged between the tripe and meat. The prepared broths are mixed together, seasoned with salt, and poured little by little into the pan. When the dish is cooked, any floating foam is skimmed off and the "gopchang jeongol" is served.