Add the chicken wings to a bowl and season with, white pepper, garlic, ginger, soy sauce, and sesame oil for 1 hour or up to overnight for best results.
In a large bowl, mix together the ingredients in the flour, cornstarch, salt, pepper, and baking powder.
Dredge the marinated chicken wings in the Seasoning Mix and press the coating in well with your hands to stick to the chicken. Place on a tray and let rest for 15 minutes while you heat up the oil.
Prepare a wire rack lined baking sheet to next to the stove. In a heavy bottomed pot over medium high heat, heat frying oil to 350°F and fry the chicken wings for 5-7 minutes until golden brown and remove them from the oil to the wire rack. Allow the oil to come back up to 350°F, then fry the wings for a 2nd time for another 2-3 minutes until deep golden brown. Remove to the wire rack to rest.
Heat neutral oil in a pan over medium heat, Add the grated garlic and ginger and cook for 30 seconds until fragrant, then add the Thai sweet chili sauce, soy sauce, brown sugar, rice vinegar, lime juice, and water. Mix until combined, and simmer over medium heat for 4-5 minutes until reduced by about 1/3. In a small bowl, mix the cornstarch and water to create a cornstarch slurry. Add the slurry to the sauce and mix until thickened and the sauce can coat the back of a spoon. Toss the wings in the sauce and serve immediately. Enjoy!
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Notes
Watch the oil temperature - It is crucial that you keep your oil temperature as close to 350F as possible! If they drop in temperature, you will find your wings are not as crispy and can even taste soggy/oily. My first tip is to use a thermometer, to keep an eye on the temperature. My second tip is to fry your wings in batches if you find that you cannot keep the oil hot enough - it's likely due to crowding.Rest after dredging - Once the wings are dredged in the seasoning mix, let them rest for 10-15 minutes. This helps the batter stick to the chicken when frying!Internal temperature - If you are not a seasoned pro at cooking (and honestly, even if you are!) I would highly recommend you use a meat thermometer to check your chicken - you want the internal temp to be at 165F. Undercooked chicken can lead to food poisoning, so always err on the side of caution!