Combine chicken, salt, white pepper, and cooking wine in a large bowl. Mix well and let it marinate for at least 30 minutes
Heat 2 inches of oil in a large heavy frying pan or pot over medium hight heat for about 10 to 12 minutes until the oil temperature reaches 350ºF.
If you don’t have a thermometer, test it by dipping one piece of chicken in the oil. If it bubbles, it is ready.
While the oil is heating, add flour and sweet potato starch to the marinaded chicken and make sure each piece is coated
Add the coated chicken to hot oil one by one.
Fry them until the all sides of the chicken are golden brown and crunchy, about 5-7 minutes
Combined all ingredients in the sauce list in a bowl
Heat the sauce mixture in a large skillet over medium heat and stir until bubbling.
Stir in chicken and combine them until every piece is coated
Top with green onion and sesame seed