16 ounces chicken breast – cut into 1-inch pieces
1.25 tsp kosher salt
0.5 tsp sugar
0.25 tsp white pepper – ground
0.5 tsp garlic powder
0.5 tsp onion powder
2 tbsp cornstarch
2 tbsp water – ice-cold
0.25 cup cornstarch
0.5 cup all-purpose flour
0.5 cup cornstarch
1 tsp baking powder
1 tsp kosher salt
1 egg
0.75 cup water – ice-cold
2 quarts vegetable oil
dipping sauces – for serving
Instructions
Place the chicken breast in a food processor and pulse until a fine, sticky paste forms, 30–60 seconds, scraping the bowl as needed.
Add 1.25 tsp kosher salt, sugar, white pepper, garlic powder, onion powder, 2 tbsp cornstarch, and 2 tbsp ice-cold water to the chicken. Process or mix until smooth and tacky, 30–60 seconds. Chill 15 minutes.
Line a sheet pan with parchment. With lightly oiled hands, form 16–20 nugget shapes about 1/2 inch thick. Freeze until firm to the touch, 15–20 minutes.
Dust the firm nuggets evenly with 0.25 cup cornstarch, shaking off any excess.
For the batter, whisk together all-purpose flour, 0.5 cup cornstarch, baking powder, and 1 tsp kosher salt. Whisk in the egg and 0.75 cup ice-cold water until smooth and the consistency of thin paint. Refrigerate 5 minutes.
Heat vegetable oil in a heavy pot to 325°F. Set a wire rack over a sheet pan for draining.
Dip each nugget into the batter, let excess drip, and carefully lower into the oil. Fry in batches at 325°F for 4–5 minutes, turning once, until pale golden and the centers read about 160°F; do not overcrowd. Drain on the rack and rest 5–10 minutes.
Increase oil to 375°F. Fry the nuggets a second time for 1–2 minutes until deep golden and crisp and the centers reach 165°F. Drain again and rest 2 minutes.