Heat the balsamic vinegar in a small saucepan over medium heat.
Bring to a boil and reduce heat to low then cook until thickened and reduced by half, about 10 minutes.
Slice the heirloom tomatoes and mozzarella cheese.
Layer tomatoes, cheese, and basil in a spiral on your serving plate.
Drizzle with good olive oil then season with sea salt and freshly cracked pepper, to taste.
Drizzle the cooled balsamic vinegar on top.
Serve immediately. Enjoy.