Season the ribs with salt and pepper. Place the ribs in a large pot and cover with water. Add 1 teaspoon of the crab boil. Over high heat, bring the liquid to a boil. Reduce the heat to medium and simmer for 30 minutes. Remove the ribs from the liquid and cool. In a food processor, fitted with a metal blade, combine the rest of the ingredients. Process until smooth, about 15 seconds. Scrape down the sides with a rubber spatula.

Preheat the oven to 350 degrees F. Place the ribs in a shallow roasting pan or casserole dish. Pour the pureed mixture over the ribs and cover with a lid or aluminum foil. Place the ribs in the oven and roast for 3 to 3 1/2 hours or until the ribs are tender. Serve with Cilantro and Roasted Potato Salad.