Satziki or Tzatziki (Greek Garlic Sauce)

      2 c  Thick yogurt                        2 tb Olive oil
      1 c  Cucumber, finely chopped            1 tb Dill or mint, fresh
      1    Clove Garlic, crushed               1 tb Lemon juice

  To thicken yogurt, place 3 1/2 cups yogurt mixed with 1 tsp salt in a
  dish towel.  Hang over bowl until dripping stops, about two hours.
  Sprinkle salt over cucumber; let stand 15 minutes and press dry.
  Combine all ingredients; chill. Makes: 3 cups