In a 3-quart heavy saucepan over moderate heat, COOK chorizo and next six ingredients in olive oil, STIRRING until vegetables are softened, about ten minutes.
ADD broth and beans; SIMMER, partially covered, 15 minutes.
Lightly MASH beans with a potato masher to slightly thicken.
Garnish with chopped cilantro, sliced lemon rounds, dollop of sour cream.
Per Serving (excluding unknown items): 287 Calories; 9g Fat (29.9% calories from fat); 15g Protein; 34g Carbohydrate; 13g Dietary Fiber; 0mg Cholesterol; 1214mg Sodium. Exchanges: 2 Grain(Starch); 1 Lean Meat; 1/2 Vegetable; 1 1/2 Fat.