I think I make the best vinaigrette dressing, except for my friend Kathleen, who just pours olive oil and vinegar right on the salad. I’m not sure why her salads are so good, but they are, and her other friends agree. This recipe for dressing is right out of “Who Wants Seconds?” and it is the best, unless you’re having Kathleen over for supper. Then let her bring the Salad.