1 (46 oz.) can pineapple juice, chilled
2 (12 oz.) cans frozen limeade concentrate
1 (2 liter) 7-Up
1/2 fifth vodka
Green food coloring (opt.)
Ice ring or ice cubes

Combine pineapple juice and limeade concentrate (not diluted). Add vodka and stir lightly. Pour 7-Up down side of punch bowl. Add desired amount of food coloring, stirring lightly again. Makes 44 (4 oz.) servings.