Tender chicken pieces are stir-fried with fermented black beans, peppers, and onions for a deeply umami-rich dish. High in protein and bursting with savory flavor, it's a satisfying choice for family dinners.
Cut the chicken breast into bite-sized pieces and toss with 1 teaspoon soy sauce, 1 teaspoon Shaoxing wine, and cornstarch. Let it marinate for at least 15 minutes.
Rinse fermented black beans briefly and roughly chop. Slice peppers and onion into strips, mince garlic, and cut scallions into 1-inch pieces.
Heat a wok or large skillet over medium-high heat. Add 1 tablespoon vegetable oil and swirl to coat. Add chicken and stir-fry until just cooked through, about 3–4 minutes. Transfer to a plate.
Add remaining oil to the pan. Stir-fry garlic and black beans until fragrant, about 30 seconds, taking care not to burn.
Add onions and bell peppers; stir-fry for 2–3 minutes until slightly softened but still crisp. Return chicken and any juices to the pan.
Add remaining soy sauce, oyster sauce, Shaoxing wine, sugar, and white pepper. Mix well, letting the sauce thicken for 1–2 minutes.
Stir in scallions and drizzle with sesame oil. Toss everything to combine for 30 seconds over high heat. Serve immediately.