Summer Drink Specialities. #Food #Recipe Watermelon and Strawberry Lemonade! 4 cups cubed and seeded watermelon 3/4 cup strawberries, halved 1/4 cup fresh lemon juice¼ cup white sugar 1 cups water (you may substitute Sprite or 7-up instead of water) All you have to do is blend this one together in your blender. It tastes so yummy!!