A Caprese Salad or a Burrata Caprese is best made right before serving. To save a little time, slice the tomatoes and lay them out on a parchment or plastic film lined rimmed baking sheet, wrap and refrigerate until serving time. If using mozzarella cheese, slice it ahead of time as well like the tomatoes and refrigerate until time for assembly. If using burrata cheese, don't drain it until your tomatoes are assembled, then add the Burrata and basil leaves.