1 (6-ounce) can frozen lemonade concentrate, thawed 1 (6-ounce) can frozen limeade concentrate, thawed 1 (20-ounce) can pineapple chunks, undrained 2 cups water 1 (2 liter) bottle cherry soda, chilled 1 (2 liter) bottle ginger ale, chilled Lemon and lime slices (optional) In a blender, combine concentrates and pineapple; cover and blend until smooth. Pour into a gallon-size container; stir in water. Store in the refrigerator. To serve, pour the mixture into a punch bowl; add cherry soda and ginger ale. Garnish with lemon and lime slices, if desired. Makes about 6 quarts.