Cold Cucumber Soup

Combine all the soup ingredients except the salt and pepper and blend in small batches in a blender until smooth. Transfer to a saucepan as blended and heat, stirring, until the soup is very hot, slightly thickened, and has lost any floury taste. Add salt and pepper to taste. Cool, then refrigerate.

Before serving, stir thoroughly and garnish each bowl with a little grated lemon rind.</