We love Lemon-berry Slush from Sonic. Strawberries in lemonade slush - yummy! After some experimenting we've figured out how to make a close approximation at home.
Start with a simple syrup (1 cup sugar and 1 cup water heated until the two are combined). Add to this a cup of lemon juice then add a cup of frozen sweetened strawberries, thawed slightly. Dilute with 3-4 cups of water (to your taste) then freeze for a few hours. To serve, thaw at room temp until it softens then take it for a spin in the blender to get it all good and slushy. Serve in your prettiest glasses.
Check out Thrifty Florida Mom for more Make It Yourself Monday ideas.