Creamy Zucchini-Corn Soup Recipe

I bought a huge zucchini for 50 cents and with a bag of frozen corn and half an onion made this quick fat-free recipe--no butter, oil, or cream yet tasting creamy and great. From The Complete Cooking Light Cookbook (2000).

Creamy Corn-and-Zucchini Soup (10 servings; recipe can be halved)

6 cups chicken broth
2 cups diced zucchini (about 2 large)
1/2 cup chopped onion
6 cups corn kernels (fresh or frozen)
3/4 teaspoon salt (if the chicken broth isn't salted already)
1/4 teaspoon black pepper
hot pepper sauce (red) (optional)

1. Bring broth to simmer in a large saucepan. Add zucchini and onion; cover and simer 2 minutes. Stir in corn, salt, and pepper, cover, and simmer 2 minutes. Cool slightly.
2. Put three cups at a time of the liquid in a blender and puree.
3. Reheat. Serve with optional hot sauce.