We have very few Asian-inspired foods on our menu, but occasionally one of us will hop on his bicycle and go down to Chinatown to pick up some vegetables. That’s how this dressing came to be. “I consider soy and ginger the essential Asian combination,” Frank says. Whenever we use what we perceive as an Asian vegetable in a salad—bean sprouts, snow peas, Savoy cabbage—we’ll toss it with this vinaigrette. This will keep for several weeks in the refrigerator.