Wash and soak beans with kombu overnight. Place kombu, squash, and azuki beans in a pot. Add enough water to cover the squash. Bring to a boil and cook for twenty minutes. Cover and continue to cook until the beans are 80% soft. This usually takes about an hour-and-a-half. When the beans are 80% soft, add a few drops of tamari. Cover and continue to cook for another fifteen minutes. Serves 4.