The flavor fresh, sweet from the watermelon, a nice punch of citrus from the limoncello and lemon juice, the ginger offering a bit of spice.
4 cups watermelon, chopped seedless or seeds removed
3 Tbsp Limoncello
1/4 cup freshly squeezed lemon juice
1 tsp grated ginger
200 ml soda or sparkling water
lemon slices for garnish