In a mixing bowl, combine the rice wine vinegar, lemon juice, Dijon mustard, finely chopped garlic, a pinch of salt, and a dash of ground black pepper.
Mix these ingredients until they are properly mixed.
Slowly pour in the 3/4 cup of extra virgin olive oil while continuing to whisk. Keep whisking until everything is thoroughly mixed.
Cover the mixing bowl with plastic wrap and place it in the refrigerator for about 10 minutes. This helps the flavors to develop and combine.
After 10 minutes, your Potbelly Vinaigrette is ready to use!