01 - Combine sliced beef with soy sauce, Shaoxing wine, ground white pepper, and 1 teaspoon cornstarch in a bowl. Mix thoroughly and let rest for 10 to 15 minutes.
02 - Mix cornstarch, all-purpose flour, and salt in a shallow dish until evenly combined.
03 - Heat vegetable oil in a deep pan or wok to 350°F (180°C), ensuring enough oil for deep frying.
04 - Dredge the marinated beef strips in the cornstarch-flour mixture, shaking off any excess coating.
05 - Fry the beef in batches for 2 to 3 minutes until golden brown and crispy. Drain on paper towels to remove excess oil.
06 - Whisk together soy sauce, rice vinegar, hoisin sauce, honey, chili garlic sauce (if using), and water in a small bowl.
07 - Remove most of the oil from the pan, leaving 1 tablespoon. Heat over medium and bring the sauce mixture to a simmer.
08 - Add the crispy beef to the simmering sauce and toss until fully coated, approximately 1 to 2 minutes.
09 - Transfer the coated beef to a serving dish. Garnish with sliced green onions and toasted sesame seeds. Serve immediately.