Peel 2 cucumbers and saute in butter with leek and bay leaf for 20 minutes. Stir in flour. Add chicken broth and salt and simmer for 30 minutes. Blend 1/2 of mixture at a time in blender. Strain thru fine sieve and chill.

Add 1 cucumber, peeled, seeded and grated. Cream lemon juice and dill. Adjust salt and pepper. Chill at least 30 minutes. Serves 6.