Potato Salad with Tomatillo Sauce

Tomatillos, garlic, chilies, and cilantro make a lively, light, and unusual dressing for a potato salad. There’s little oil to make it shine and slide, so the potatoes will look best if you dress them just before serving. This particular salad is very simple, but you could include any of the vegetables that usually go into potato salads—celery, green peppers, sliced raw or pickled onions, or small cubes of cucumber.