Margarita Punch - cooking recipe

Ingredients

6 ounces frozen lemonade concentrate
6 ounces frozen limeade concentrate
1/2 cup powdered sugar
3 cups crushed ice
1 liter carbonated lemon-lime beverage
2 thinly sliced limes

Preparation

Combine the concentrates, powdered sugar, and crushed ice in a large freezer proof container.
Cover tightly and freeze for at least one hour (or for many days depending on how early you're planning ahead).
Place the frozen mixture into a large punch bowl.
Slowly pour in the soda and add the lime and/or lemon slices.
Serve in chilled (salt rimmed optional) glasses.