Marinate chicken wings with salt, white pepper, garlic powder, ground ginger, soy sauce, and sesame oil. Let sit for 1-2 hours or overnight.
Combine flour, cornstarch, kosher salt, white pepper, and baking powder. Add leftover marinade or water to form coarse bits.
Press wings into the seasoning mix, coat well, and shake off excess. Let rest 5-10 minutes.
Heat oil to 350°F. Fry wings in batches 6-8 minutes. Drain.
Refry at 350°F for 1-2 minutes until golden and crispy.
In a skillet, heat oil. Add garlic powder, ground ginger, and gochujang. Cook 30-45 seconds.
Add soy sauce, brown sugar, honey, rice vinegar, and water. Simmer 2-3 minutes until thickened.
Toss fried wings in the sauce. Serve hot.