Boil the pasta to al dente according to the package directions. Drain pasta (don to rinse) and place in medium bowl. Add the red wine vinegar and olive oil and mix well. Add salt and pepper to taste. Allow to cool about 15 minutes on counter and then an hour in fridge.
Once pasta is cooled, add the tomatoes, mozzarella, basil and lemon. Combine will. Adjust seasonings if necessary. Keep in fridge until ready to serve. Great super chilled or at room temp.
Recipe by pretty plain janes at https://prettyplainjanes.com/2016/05/19/caprese-orzo-salad/