Tami's Tri Color Caprese Salad

Ingredients

• 3 large yellow tomatoes, sliced
• 1 (4 ounce) package fresh basil, leaves stripped from stems
• 3 large red tomatoes, sliced
• 10 ounces fresh mozzarella cheese, sliced
• 1 shallot, very thinly shaved
• 2 tablespoons olive oil, or to taste
• 1 ½ tablespoons aged balsamic vinegar, or to taste
• salt and ground black pepper to taste