Ingredient:

• 3 (15 ounce) cans black beans, rinsed and drained, divided
• 1 (16 ounce) can diced tomatoes
• ¼ cup butter
• 1 ¼ cups chopped onion
• 4 cloves garlic, chopped
• 1 teaspoon salt
• ½ teaspoon ground black pepper
• 4 cups beef broth
• 1 (15 ounce) can pumpkin purée
• ½ pound cubed cooked ham
• 3 tablespoons sherry vinegar