2tablespoonsvegetable oillard or bacon drippings also work
1/2cupcilantro stems, chopped
1/2teaspoon chipotle powder
salt to taste
Saute onions and cilantro stems in 2 tablespoons of oil until the onions are translucent. Add cumin and chipotle powder. Stir in spices. Add sorted beans and water. Pressure cook for 40 minutes. Allow pressure cooker to release naturally, about 20 minutes.
Taste beans and season with salt (I like about 1 1/2 teaspoons). If you desire refried style simply mash beans with either a potato masher or a stick blender until the beans are smooth.