Wedding Punch - cooking recipe

Ingredients

1 (46 oz.) can pineapple juice
24 oz. pink grapefruit juice
1/2 gal. orange juice
2 liter 7-Up, chilled
1/4 c. sugar
vodka to taste (if desired)

Preparation

Mix all ingredients except 7-Up.
When ready to serve, add 7-Up.
If desired, add vodka to taste.