"Toum, an intense garlic sauce usually paired with shawarma, is used as both a marinade and a condiment in this chicken dish...."
INGREDIENTS
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6 garlic cloves
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2 large egg whites (see note)
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2 Tbsp. fresh lemon juice
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1 1/2 cups vegetable oil
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3 Tbsp. fresh lemon juice
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2 Tbsp. tomato paste
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1 Tbsp. ground coriander
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3 Tbsp. vegetable oil, plus more for grill
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1 1/4 lb. skinless, boneless chicken thighs
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4 pitas, warmed
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5 (8"–12"-long) metal skewers