Chop the chicken thighs into 1-inch pieces and add them to a bowl with soy sauce, sesame oil, sugar, five-spice, white pepper, salt, grated ginger, and grated garlic.
Mix well and let marinate in the fridge for at least 30 minutes.
Coat the marinated chicken in tapioca flour.
Deep-fry at 350°F for 5–7 minutes, or until golden brown and cooked through.
Season with chilli flakes and salt.
Combine mayonnaise, sriracha, sesame oil, rice vinegar, and five-spice.
Mix well.
