Variations: Tex-Mex Chicken-Vegetable Soup: Prepare as directed, except add 1 teaspoon ground cumin with the leeks and garlic. Add 1 cup loose-pack frozen whole kernel corn; 1 cup chopped cooked chicken; one 4-ounce can chopped green chile peppers, drained; and 3 tablespoons snipped fresh cilantro with the lemon juice. Heat through. If desired, garnish with lemon wedges and fresh cilantro sprigs.
Asian Vegetable Soup: Prepare as directed, except add 1/2 cup quick-cooking rice and 1/2 cup water with the cabbage. Substitute rice vinegar for the lemon juice. Add 1 cup thinly sliced fresh mushrooms and 2 green onions, thinly sliced, with the rice vinegar. Heat through. If desired, garnish with green onion slivers.