DUCAL Refried Beans Black 29 Oz (823 g). DUCAL Refried Beans Black 29 Oz. Ducal Refried Black Beans can be used in almost any dish. They have a large amount of protein and carbohydrates. The beans come in a convenient package that makes the beans easy to store. They are made with the freshest beans possible to give you delicious flavors. You can use the beans as a base in a chili or use it as a layer in a dip.