Pour water, lemon juice and simple syrup into a large pitcher or container, and stir until combined. Reserve 1 quart homemade lemonade. Pour remaining lemonade into empty ice cube tray, and freeze ...

Pour half of this mix into the watermelon and the other half in a pitcher. Step 3: Pour 200 ml lemonade in the watermelon and mix well ... Fill it again with the pitcher when empty ! ;-) You may like.