Chefs have long played the key role of culinary arbiters as restaurants became the point of entry for international foods and flavors, a distinct competitive advantage over supermarkets. At Stix, a restaurant in San Francisco that opened this summer, Crispy Korean Corn Dogs are battered in Sweet Korean rice flour, rolled in panko bread crumbs and crinkle-cut frieds or ramen noodles, fried and then dusted with sugar.