Cut off the front ⅓ of each prawn’s head including the eyes, and all of the feet. Marinate in 1 tablespoon wine for 10 minutes, then coat with 2 tablespoons cornstarch.
Heat 5 cups oil, deep-fry prawns over high heat for 1-½ minutes. Remove and drain dry.
Heat pan until very hot, stir-fry prawns and use left hand to slowly sprinkle in seasonings, spri