Kalte Ente(Cold Duck)  
["1/2 c. superfine sugar", "1 large lemon, thinly sliced and seeded", "1/2 c. orange liqueur", "1/2 gal. Rhine wine, chilled", "ice", "1 (12 oz.) bottle club soda, chilled"]
["Sprinkle sugar over lemon slices.", "Press lemon slices with back of spoon to release flavor. Stir in orange liqueur.", "Chill. Stir in wine; pour over ice in punch bowl.", "Add club soda; stir lightly to blend.", "Makes 18 (4 1/2 ounce) servings."]
["sugar", "lemon", "orange liqueur", "Rhine wine", "club soda"]