INGREDIENTS
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1 1/2 lb. small new potatoes, halved if large
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1/4 c. chopped chives, plus additional for garnish
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1 tbsp. Grainy mustard
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1 tbsp. apple cider vinegar
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3 tbsp. extra-virgin olive oil
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kosher salt
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Black pepper
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1 1/4 lb. flank steak, cut into 2 pieces
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1 tsp. ground coriander