Combine all ingredients; simmer gently until frozen stock melts and flavors blend. Makes 6 servings. If desired, two different commercial soups can be combined for new flavor treats, such as Black Bean and Onion; Tomato and Split Pea or Vegetable Noodle; Mushroom and Onion. For 2 cans, increase frozen soup stock to 2 c. and water to 8 c.