-cooked without salt/fat Sort and wash beans. Combine beans, green pepper, and 2 tb onion in a large Dutch Oven. Cover with 6 cups of water, and soak overnight. Add remaining 4 cups water to Dutch oven; cover and bring to a boil. Reduce heat, and simmer 2.5 hrs or until beans are tender. Combine remaining 2 tb onion, garlic, oregano, and cumin in a small bowl; mash mixture, using a fork. Stir in vinegar. Add vinegar mixture and salt to beans. Simmer, uncovered, an additional 20 minutes. Serve over hot cooked rice.