Mix the sliced beef with soy sauce, cooking wine, and
cornstarch and set aside. Heat the wok and 4 tablespoons of vegetable oil.
Stir-fry the garlic and jalapeno pepper until fragrant, about 1 minute. Add
the beef and the sauce ingredients and stir-fry over high heat just until the
beef is no longer pink on the outside, about 2 to 3 minutes. Add the green
onions during the last 1 minute of cooking.