In midsummer, when green chili ripens in alternating rows with red tomatoes and yellow corn, it’s time for a garden stir-fry. In her Pueblo Indian Cookbook (1972) Phyllis Hughes suggests a number of summer skillet dishes, depending on what your garden grows—squashes, onions, green beans. Southwestern flavor is in the spicing—cumin, oregano, coriander, and, of course, the heat of chili pepper. Canned green chilies work well if you can’t get fresh ones, or use sweet be