1. Combine the first 5 ingredients in a blender until they are thoroughly mixed. While mixing on high, pour the oil in a slow, steady stream. Add all the oil or stop when desired consistancy is reached. When refrigerated this dressing will last 2 weeks.
* Nutritional yeast grows on molasses and is rich in B vitamins. It is available in natural food stores. Do not confuse it with brewer's yeast, its darker and powdered cousin.