Garlic Leek Soup with saffron

I was intrigued by a recipe that I saw on this site. I saw a show on Create with this Chef Hubert Keller making a spinach cream soup with crab. I thought it looked really good so I went on the internet in search of the recipe. While perusing the site I saw a recipe for Garlic and Saffron Soup.

Have you watched PBS's Create TV? Ever since we got our converter box for regular television, we receive a signal for this really nice channel. We are avid PBS fans so we were thrilled to find out we now had Create and World! We do not have cable, really there isn't any time to watch it anyhow.

GARLIC and LEEK SOUP with saffron
based on this recipe

1 cup leeks
3 heads of garlic, blanched and peeled
2 cups oyster broth
2 cups water
1 tablespoon extra virgin olive oil
1 small potato, skinned and diced
1 teaspoon salt
1/4 teaspoon freshly ground pepper
1/2 cup half and half
pinch of saffron
1 tomato, chopped
2 green onions, minced

Saute leeks in olive oil until soft. Add garlic, saffron, broth and water. Add potato and s and p. Cook until potato is tender. Puree and return to pot. Pour in half and half and heat until just about to boil. Remove from heat. Ladle into bowls and garnish with tomato and green onions.