Ingredients:
Cake
1 box Betty Crocker* SuperMoist* white cake mix
1 1/4 cups water
1/3 cup vegetable oil
3 eggs
1 packet (6.6g) cherry- or orange-flavoured unsweetened drink mix
1/2 cup frozen lemonade or limeade concentrate, thawed
Super Sour Frosting
1/2 packet cherry- or orange-flavoured unsweetened drink mix
4 to 5 tablespoons frozen lemonade or limeade concentrate, thawed
3 cups icing sugar
1/4 cup butter or margarine, softened
Sour gummi candies, if desired