If using 1 pound of dry pinto beans, wash and pick-over beans. Soak over-night in a large container with enough water to cover the beans by at least 2-inches. Next day: pour off soaking water and rinse beans. Place beans in a large pot with enough water to cover the beans by 2-inches. Bring beans to a boil and then reduce heat to medium-low and simmer beans until tender, about 2 hours (longer if beans are old). Pour off cooking water. Use 6 cups of beans in recipe in place of the 3 (15 ounce) cans of pinto beans.