Marinate the **chicken cubes** in **soy sauce**, **Shaoxing wine**, and **five-spice powder** for at least 15 minutes.⏱ 15 min
Dredge each piece of chicken thoroughly in the **sweet potato starch**, shaking off any excess powder.
Heat the **frying oil** in a deep pot or wok to **350°F (175°C)** using a kitchen thermometer.
Fry the chicken in batches for 3–4 minutes until the coating is **light golden brown** and crisp.⏱ 4 min
Remove the chicken and place it on a wire rack to drain for 2 minutes.⏱ 2 min
Increase the oil heat to **375°F (190°C)** and flash-fry the chicken a second time for 60 seconds for extra crunch.⏱ 1 min
Toss the **basil leaves** into the hot oil for 10 seconds until crisp, then drain with the chicken.
Sprinkle the hot chicken with the **Sichuan peppercorn-salt** mixture and serve immediately.