1.Trim off a thin slice from the top and bottom of the tomatoes to make a flat surface
2.Slice each tomato into 4 even slices
3.Cut each mozzarella ball into 4 even slices
4.In a small bowl, whisk together vinegar and 1/4 tsp. of salt and pepper
5.Slowly whisk in 1/4 cup of olive oil until vinaigrette is emulsified
6.Season tomatoes and mozzarella with basil, salt, and pepper
7.Cut ham into triangles
8.Drizzle 2 Tbsp. of vinaigrette over stacks
9.Garnish with basil