Brine the Chicken: In a large bowl, combine the chicken pieces, 1 tsp salt, and 2 tbsp vinegar. Add enough water to cover. Let it sit for 30 minutes.
Prepare the Sauces & Spices: While the chicken is brining, mix the hot sauce and chili sauce for the injection. In a separate bowl, combine all the ingredients for the spice mix.
Inject the Chicken: After 30 minutes, drain the chicken. Inject the hot sauce mixture near the bone of each piece. Be careful during this step.
Marinate: Use 2 tbsp of the prepared spice mix to marinate the injected chicken.
Prepare Coating: In a large, shallow dish, combine the plain flour, cornflour, and the rest of the spice mix
First Coat: Press each piece of chicken firmly into the dry coating mixture until fully covered.
Dip in Water: Briefly dip the coated chicken into a bowl of cold water
Second Coat: Immediately coat the chicken in the dry mixture again, pressing firmly and shaking off any excess.
Fry the Chicken: Heat oil in a heavy-bottomed pot over medium-high heat. Carefully fry the chicken pieces for 12-15 minutes, turning occasionally, until deep golden-brown and cooked through.
Serve: Serve hot with crispy french fries and garlic sauce.re