Trim ends off zucchini. Peel and chop. Melt butter in large heavy saucepan over low heat. Add leeks. Cook for 5 minutes or until soft but not brown. Add zucchini. Increase heat to medium high. Saute for 2 minutes; do not brown. Add stock. Bring to a boil. Reduce heat to moderate. Simmer for 5 minutes or until zucchini is just tender. Add watercress. Simmer for 1 minute. Puree soup in blender until smooth. Add cream. Add salt and pepper. 4-6 servings.
By Robin from Washington, IA
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(Archived Oct 28, 2010)Cream of Watercress Soup
In another pan heat the rest of the butter and stir in flour. Cook for a few minutes and off the heat blend in the milk gradually. Return to the hob and bring sauce to the boil, stirring all the time. Season and pour into the watercress and stock. Transfer to an electric blender and puree to a smooth cream. Taste and adjust seasoning. Return to pan and re-heat adding cream if liked. Serve garnished with a few whole watercress leaves and croutons.
By Raymonde G. from North Bay, Ontario