
Mix all the wet seasoning together in a bowl.
Add chicken thigh and coat every single piece with the marinade.
Marinate for at least 3 hours or overnight.
Mix all the dry mix ingredients in a bowl.
Mix all the sauce ingredients together in a bowl.
Take a piece of chicken thigh and lightly dredge it in the dry mix, ensuring it is fully coated.
Dip the chicken in ice cold water for 5 seconds, careful not to rub off the flour coat.
Allow the chicken to rest for 10 seconds before placing it back into the dry mix.
Dredge the chicken again, making sure every inch is coated. Repeat until done.
Let it rest for 5 minutes before frying.
Deep fry in hot oil over medium heat until golden brown (about 10-15 minutes).
Optional: Fry for another 5-8 minutes for extra crispy chicken.
Remove from oil and let it rest; sprinkle a pinch of salt and more gochugaru if desired.
Toast the burger buns.
Spread sauce on both burger buns; add chicken, cheese, lettuce, and top bun. Serve and enjoy!