In a small saucepan, add the raspberries and sugar. Simmer for 4 to 5 minutes on medium heat.
Refrigerate raspberry puree in the refrigerator for about 2 hours.
In a large pitcher add raspberry puree and strawberry lemonade concentrate.
Stir in 1 bottle of Sprite and serve immediately over ice.
Pour into a cup or glass and add a few scoops of frozen sorbet.
Garnish with a Strawberry and enjoy!