Holiday Punch Bowl

4 cups canned cranberry juice cocktail 
4 cups grapefruit juice
1 cup brown sugar 
2 28-oz. bottles pale dry ginger ale 
Orange slices

Heat cranberry juice.
Dissolve brown sugar in hot juice.
Add grapefruit juice.
Mix well.
Chill.
Pour over ice in punch bowl.
Add ice cold pale dry ginger ale. 
Stir gently to mix.
Garnish with orange slices.

Makes 32 punch cups