How do you cook buche? First you grab the buche,(pork stomach) and you boil it for about 5 hours with salt. You take out the buche when its nice and tender heat up some lard in a pan and throw it in … there for about 30 minutes frying giving it a tender crunch to it.Then you pour about 1/4 of coca cola in the lard and the buche.That will give it a distinct color and taste that is super wonderful.I learned this recipe from an old man cooking Buche for people at a Mexican restaurant.ow do you cook buche? First you grab the buche,(pork stomach) and you boil it for about 5 hours with salt. You take out the buche when its nice and tender heat up some lard in a pan and throw it in … there for about 30 minutes frying giving it a tender crunch to it.