Freeze: 6 hours or overnight

1 8-ounce carton vanilla yogurt
1 cup orange juice
4 cups orange soda

Put the vanilla yogurt, orange juice, and 2 cups of the orange soda in the blender container. Cover and blend on high speed until combined. Pour the mixture into the ice cube trays and cover with plastic wrap. Place in freezer for 6 hours or overnight.

Just before serving, remove the frozen cubes from 1 of the ice cube trays. Put the cubes in the blender. Add 1 cup of the orange soda. Cover and blend on high speed until slushy. Turn off the blender and pour into 6 glasses. Repeat with remaining frozen cubes and orange soda. Makes 12 (1/2-cup) servings.