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1
Marinade: whisk the hoisin sauce, vinegar, soy sauce, sugar, cornstarch, and water in a bowl
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2
Remove 6 tbsp of marinade and add to a gallon zip lock bag along with the chicken. Move to fridge for at least 30 minutes. Keep remaining marinade in bowl.
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3
Heat 1 Tbsp oil in a large skillet until shimmering
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4
Add garlic, ginger, and red pepper flakes, cook until fragrant
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5
Add 2 cups of the marinade to the skillet (there will be leftover in the bowl) and simmer.
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6
Whisk constantly until the mixture is dark brown and thickened.
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7
Remove sauce from heat, cover, and keep warm
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8
Whisk egg whites in a shallow dish until foamy, set aside
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9
In a shallow dish, combine cornstarch, flour, baking soda, and remaining marinade. Mix until it resembles coarse meal.
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10
Remove chicken from fridge. Pat chicken dry.
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11
Toss half the chicken into the egg whites until coated.
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12
Dredge chicken in flour mixture, pressing to adhere.
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13
Transfer chicken to a plate and repeat with remaining chicken.
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14
Heat remaining oil in a dutch oven to 350 degrees.
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15
Fry half the chicken until golden brown (about 3 minutes) turning halfway through.
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16
Place on paper towels to drain.
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17
Warm the sauce until simmering. Add chicken. Toss and serve.