Cucumber Soup
["1 medium onion", "butter or margarine", "2 medium cucumbers", "1 c. white vinegar", "salt and pepper"]
["Pan fry sliced onion in butter or margarine until it begins to brown; remove from heat.", "Thinly slice peeled cucumbers; place in large pot.", "Cover with cold water.", "Add onion, vinegar, salt and pepper.", "Bring to a boil and simmer until cucumber is soft.", "May be thickened with cubed potatoes for longer cooking time or with a white flour roux for immediate serving.", "Serve hot or cold."]
["onion", "butter", "cucumbers", "white vinegar", "salt"]