Step 1: Marinate and Velvet the Chicken
In a medium bowl, combine the thinly sliced chicken strips with the marinade ingredients: 2 tablespoons of low-sodium soy sauce, 1 tablespoon of cornstarch, 1 teaspoon of toasted sesame oil, and the optional Shaoxing wine. Use your hands or tongs to toss everything together until the chicken is evenly coated. The cornstarch mixture will feel a bit slick; this is the “velveting” process that will keep the chicken incredibly moist and tender. Set the bowl aside to marinate for at least 15 minutes at room temperature, or up to an hour in the refrigerator.

Step 2: Prepare the Signature Sauce
In a small bowl or liquid measuring cup, whisk together all the sauce ingredients: ½ cup low-sodium soy sauce, ¼ cup water or broth, 2 tablespoons brown sugar or honey, 1 tablespoon rice vinegar, 1 tablespoon toasted sesame oil, 1 tablespoon cornstarch, and ¼ teaspoon white pepper. Continue whisking until the cornstarch and sugar are fully dissolved and there are no lumps. Set this sauce mixture near your stove.

Step 3: Prepare Your Vegetables (Mise en Place)
This is the most crucial step for a stress-free stir fry experience. Wash, chop, and measure all your vegetables and aromatics as listed in the ingredients. Place them in separate small bowls or piles on a large cutting board. Have your minced garlic, grated ginger, and separated scallion whites and greens ready to go.

Step 4: Sear the Chicken
Place a large wok or a 12-inch heavy-bottomed skillet over high heat. Let the pan get very hot—you should see faint wisps of smoke. Add 1 tablespoon of the high smoke-point oil and swirl to coat the bottom. Carefully add the marinated chicken to the pan in a single layer, being careful not to overcrowd it (cook in two batches if necessary). Let the chicken cook undisturbed for 2-3 minutes, until a deep golden-brown crust forms on the bottom. Then, stir and flip the chicken, cooking for another 2-3 minutes until it is cooked through. The cornstarch coating will create a beautiful, caramelized exterior. Use a slotted spoon to remove the chicken from the wok and transfer it to a clean plate.

Step 5: Sauté the Aromatics and Hard Vegetables
Reduce the heat to medium-high. Add another tablespoon of oil to the now-empty wok. Add the minced ginger, minced garlic, and the white parts of the scallions. Stir-fry constantly for about 30 seconds until they are intensely fragrant—be careful not to burn them. Immediately add the “hardest” vegetables: the broccoli florets and sliced carrots. Stir-fry for 3-4 minutes. The broccoli should turn a vibrant, bright green.

Step 6: Add the Softer Vegetables
Add the bell pepper pieces and snap peas to the wok. Continue to stir-fry for another 2-3 minutes. You are aiming for a “tender-crisp” texture—the vegetables should be cooked through but still have a pleasant bite and vibrant color. They should not be soft or mushy.

Step 7: Combine and Sauce
Return the cooked chicken to the wok with the vegetables. Give your signature sauce mixture a final quick whisk (the cornstarch will have settled) and pour it all over the chicken and vegetables.

Step 8: Thicken and Finish
Continue to stir and toss everything together constantly. As the sauce comes to a boil, the cornstarch in it will activate, and the sauce will thicken into a beautiful, glossy glaze that coats every single ingredient. This should only take about 1-2 minutes. Once the sauce has thickened to your liking, turn off the heat. Stir in the green parts of the scallions.

Step 9: Serve Immediately
Transfer the stir fry to a serving platter or individual bowls. Garnish with a sprinkle of toasted sesame seeds, if desired. Serve immediately for the best texture and flavor.