TIP: You don't need to use a food processor or blender to make French Dressing. Sometimes I don't want the hassle of cleaning a food processor, as it's really only the onion that needs blending. I cut the onion into smaller pieces, small enough to fit into a garlic press, and push through. The garlic press allows the onion pieces to be broken up small enough, saving blending time! Just place all the ingredients in a bowl, and vigorously whisk together until combined.