The original refried bean recipe my great-grandma Molly used to prepare. She always used pink beans, which I prefer, too but since they are more difficult to find nowadays, substitute pinto or black beans. I dictated this recipe from my mother and she said her grandmother used manteca (lard) available from the butcher, or my version is to fry up a few slices of bacon and reserve the drippings. If you're looking for a low fat recipe, this isn't it. (I've posted a vegetarian version of these beans: recipe #159267)