Instructions: 1. Cut off roots of leeks and slice down the middle. Rinse under cold water to remove dirt from between the leaves. Discard brown or tough outer leaves and coarsely chop white and pale green parts.

2. In a large pot with lid, melt butter over medium heat. Add leeks and garlic and saut for 5 minutes, or until leeks start to soften. Pour in hot broth or water, cover, and bring to a boil over high heat. Reduce heat to medium-low, cover, and simmer for 20 minutes.

3. In a blender (or, using a hand blender, directly in the pot) puree soup until smooth. Pour through a strainer into a large bowl, if desired, for a smoother texture.

4. Return to pot and whisk in sour cream, if desired. Season to taste with salt and pepper and warm through.

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