1Add ginger paste, garlic powder, oyster sauce, custard powder, chicken powder, a little bit of yum yum, and sesame oil to the chicken thigh and marinate.
2Add one part self-raising flour and one part corn flour to the marinated chicken.
3Add water and mix it all in to create the batter.
4Coat the marinated chicken in cornstarch.
5Fry the chicken one piece at a time.
6Combine Kewpie mayo, sweet chili, Sriracha, and lemon juice to make the sauce.