Sichuan green beans are stir-fried over high heat so they're still crisp, but charred. Then ground turkey and spices are added for a nice kick of heat.
Stir together 2 Tablespoons water, 2 Tablespoons low sodium soy sauce, 1 Tablespoon Shaoxing cooking wine, 1 teaspoon granulated sugar, 1/2 teaspoon cornstarch, 1/4 teaspoon white pepper, 1/4 teaspoon red chile flakes, and 1/4 teaspoon dry mustard powder together in a small bowl. Set aside.
Heat 2 Tablespoons canola oil over high heat in a 12" non-stick or cast iron skillet or wok until just smoking. Add the trimmed green beans. Cook, stirring often until beans are spotty black but still crisp, 5-8 minutes. If beans are burning, turn the heat down to medium-high. Transfer beans to a large plate.
Reduce heat to medium-high. Add 1/2 pound ground turkey to skillet, breaking the meat apart with a spoon, and cook until no longer pink, 2 minutes. Add the minced garlic and grated ginger and cook until fragrant, 30 seconds. Stir sauce again, then add it to the skillet, stirring constantly until slightly thickened, 30 seconds. Remove pan from heat. Stir in the green beans, sliced scallions, and 1 teaspoon sesame oil. Serve over noodles or rice.