Lemon basil leaves*
Cut the watermelon into 1" cubes. Using a tiny melon baller scoop out a small divot from top of square. Turn dunes upside down on plate so they will drain.
When ready to serve turn squares over and add a little balsamic to each square (about 1/8-1/4 tsp.) add basil leaf and pearl of mozzarella. Serve and enjoy.