Thin slices of pork are seared with cumin seeds, dried chilies, and onions in a style borrowed from China's northwest. Bold and aromatic with ample protein, this dish brings a unique smoky-spicy twist to family dinners.
Slice the pork tenderloin into thin strips, set aside in a bowl. Mix with soy sauce, Shaoxing wine, sugar, and a pinch of salt; let marinate for at least 15 minutes.
Slice the onion thinly, mince the garlic, cut scallions into 2-inch sections, and break dried chilies in half. Prepare all seasoning ingredients.
Heat a large skillet or wok over medium-high heat. Add vegetable oil and swirl to coat the pan evenly. Once shimmering, add cumin seeds and toast for about 30 seconds until fragrant—not burned.
Add dried chilies and onion to the pan. Stir-fry for 2-3 minutes, letting the onions soften and chilies darken while stirring constantly for even cooking.
Increase heat to high. Add marinated pork in a single layer. Sear undisturbed for 90 seconds, then stir-fry with onions for an additional 2-3 minutes until pork is browned and nearly cooked through.
Toss in garlic, scallions, remaining salt, and black pepper. Stir-fry briskly for another minute, ensuring pork finishes cooking but remains moist.
Transfer immediately to a serving platter to prevent overcooking; serve hot for best texture and aroma.