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1
Place chicken in a 1 gallon resealable bag.
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2
Combine broth, orange juice, zest, vinegar, soy sauce, sugar, garlic, ginger, and cayenne in a large saucepan.
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3
Whisk until sugar is fully dissolved.
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4
Measure out 3/4 c of the mixture and pour into the bag with the chicken.
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5
Press out as much air as possible and seal bag.
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6
Chill for 30-60 minutes, but no longer.
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7
Bring remaining mixture to a boil over high heat.
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8
In a small bowl, stir together cornstarch and cold water.
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9
Whisk cornstarch mixture into sauce.
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10
Simmer sauce, stirring occasionally, until thick and translucent, about 1 minute.
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11
Remove from heat.
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12
Stir in orange peel and chiles.
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13
Set aside.
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14
Place egg whites in a shallow dish.
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15
Using a fork, beat until frothy.
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16
In a second dish, mix the cornstarch, cayenne, and baking soda until combined.
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17
Drain chicken in a colander; pat dry.
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18
Place half of chicken in the egg whites, coating completely.
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19
Transfer pieces to cornstarch mixture and coat thoroughly.
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20
Place dredged chicken pieces on a wire rack set over baking sheet; repeat with remaining chicken.
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21
Heat oil in a dutch oven or a straight sided saute pan over high heat until the oil registers 350 degrees.
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22
Carefully place chicken in oil.
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23
Fry in 2 batches until golden brown, about 5 minutes, turning pieces halfway through cooking.
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24
Transfer chicken to a large plate lined with paper towels.
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25
Let oil return to 350 degrees between batches.
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26
Reheat sauce over medium heat until simmering, about 2 minutes.
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27
Add chicken and gently toss to coat.
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28
Serve immediately.