Whipped frozen lemonade combines the creaminess of a milkshake with the thirst-quenching tanginess of freshly squeezed lemonade for an incredibly refreshing treat. And this simple frozen lemonade treat comes together with just four ingredients and a blender. You can use light coconut milk or refrigerated coconut milk in place of full-fat coconut milk, though the end result won't be as rich and creamy. Leftover simple syrup will keep for up to 1 week in the refrigerator.
