Check beans for debris, and rinse thoroughly. In a large pot, sauté aromatic vegetables (onions, garlic, celery, carrot, etc.) in olive oil. Add beans and enough water to cover by about 2 inches. Bring to a full boil for 10 to 15 minutes. Reduce heat to a gentle simmer, using a lid to help regulate the heat, and gently cook until done, 1 to 3 hours. Salt when the beans start to soften. A pre-soak of 2 to 6 hours will lessen the cooking time. Even though these beans are small, you should take your time and gently allow them to fully cook. They are edible quite soon after you start but the real creaminess comes with time and low, slow and gentle heat.