Perfect Purple Punch - cooking recipe

Ingredients

2 liters ginger ale or 2 liters carbonated lemon-lime beverage
1/2 gallon raspberry sherbet
1 (12 ounce) can frozen raspberry-lemonade concentrate or (12 ounce) can frozen pink lemonade concentrate
4 cups water (or more)
1 (12 ounce) bag frozen raspberries
3 lbs dry ice (optional)

Preparation

Put dry ice chunk in the bottom of a punch bowl.
Sprinkle frozen raspberries over bottom of punch bowl.
Spoon in raspberry sherbet.
Mix water with frozen lemon-aid and pour over bottom of punch bowl.
Pour ginger-ale down the sides of the punch bowl.
Stir lightly.