3 to 5 walnuts, shelled
dash of salt
1 clove garlic
1/4 c. olive oil
1 Tbsp. water
1 Tbsp. vinegar
1 qt. buttermilk or 1 qt. yogurt, diluted with 1/2 c. cold water or 6 ice cubes
1 cucumber, chopped (or more)
salt and pepper to taste

In a mortar mash nuts with salt. Add garlic and oil; continue to mash to a paste. Mash in water and vinegar. Stir mixture into chilled buttermilk or diluted yogurt. Add chopped cucumber and season with salt and pepper. Serve cold. Yields 4 servings.