Use fresh, ripe heirloom tomatoes, good-quality extra-virgin olive oil and aged balsamic if possible. While classic caprese salads use beefsteak tomatoes, I like to step it up a notch and use juicy, heirloom tomatoes.
Slice the tomatoes and mozzarella cheese into ¼”-thick slices. Arrange the mozzarella, heirloom tomatoes, cherry tomatoes, and basil leaves on a large platter.
Drizzle olive oil and balsamic vinegar over the top. Season with salt to taste. Serve at room temperature.