9 cups water
1 1/2 cups white sugar (optional)
1 (12 fluid ounce) can frozen orange juice concentrate
1 (12 fluid ounce) can frozen lemonade concentrate
1 pint peach schnapps
1 (2 liter) bottle lemon-lime flavored carbonated beverage
In a large freezer container, combine water and sugar. Stir until sugar is dissolved. Stir in orange juice concentrate, lemonade concentrate and peach schnapps. Cover and freeze for 4 hours or overnight.
To serve, fill glass 3/4 of the way full with slush, then top off with lemon-lime soda, and stir.