Prepare by soaking beans overnight, keeping each bean color separate, at least 8 hrs. If mixed together, colors will bleed. Retain the soaking liquid for cooking.

To simmer beans: In large pot add beans, soaking water and extra water, and whole spices. Bring to boil, then turn down and simmer, 2-4 hours, until tender. Tender beans require both overnight soaking and a long time slow cooking. Drain and set aside.

To grind whole spices: Grind whole chili, cumin seed, corriander seed, black peppercorns, and red chili into coarse powder in spice grinder. Set aside. This step can also be done while browning onions, along with chopping base vegetables.

To start base: In large pot, brown onion, lowering heat once it colors, 10-12 min. Add splash of water, tomato, garlic and ground spices, and simmer 2-3 min. Result should be chunky fragrant vegetable mix, without much excess water, which would only slow cooking. Cover with 1-2 inches water and blend coarsely, with hand blender.

Main: To large pot with vegetable base, add beans, corn and olives, and cover with 1-2 inches water. Bring to boil, then turn down to simmer, 1 hours until flavors blend together.

Finish: Add green onion and fresh cilantro to garnish.