Orange-flavor beef is a northern Chinese specialty. Ken Hom's version, substituting fresh orange peel for the traditional dried tangerine peel, is a little different. Cut The Beef into thin slices 2 inches long, cutting against the grain. Put the beef into a bowl together with the soy sauce, rice wine or sherry, ginger, cornstarch and 1 teaspoon of sesame oil. Mix well, then let the mixture marinate for about 20 minutes. Heat the oil in a wok or large skillet until it is very hot. Remove the beef from the marinade with a slotted spoon. Add it to the pan and stir-fry it for 2 minutes until it browns. Remove it and leave to drain in a colander or sieve. Pour off most of the oil, leaving about 1 teaspoon. Reheat the pan over a high heat and then add the dried chiles. Stir-fry them for 10 seconds, and then return the beef to the pan. Add the rest of the ingredients and stir-fry for 4 minutes, mixing well. Serve the dish at once.