Boil water in a pot, put the basil in for a few seconds and immediately transfer to the ice bowl. Wipe the leaves well with paper towels and place in a blender. Add salt and oil, grind, and filter.
Create a layer of tomatoes on a large plate. Add the mozzarella, chili, and basil leaves. Sprinkle salt, and drizzle basil oil and balsamic vinegar.