Pinto Bean Soup with Salsa Fresca

Name: Pinto Bean Soup with Salsa Fresca
Ingredients: 3 plum tomatoes, cored, seeded and diced; 1/2 small red onion, finely diced; 1 bunch cilantro, leaves only, chopped; Juice of 1 lime (about 1 tablespoon); Salt and freshly ground black pepper; 1 1/2 cups dried pinto beans; 7 cups water; 1/4 cup vegetable oil; 2 medium onions, diced; 1 teaspoon salt; 1/2 teaspoon freshly ground black pepper; 4 cloves garlic, minced; 6 cups chicken stock, vegetable stock or water; 1/3 cup sour cream or creme fraiche, for garnish