Bring a big pot of water to a boil, then salt it generously, with a few tablespoons of salt. Taste the water to make sure it tastes like seawater.

Cook your pasta to al dente per package instructions, then drain and rinse the pasta.

In a large bowl, whisk to combine the vinegar, mustard, garlic, olive oil, and a pinch of salt and pepper.

Add the basil, tomatoes, mozzarella, and pasta to the bowl, and toss well. Make your final seasoning adjustments and serve. Enjoy!