"New Orleans chef Donald Link serves this salad with Andouille and Sweet Potato Pie...."
INGREDIENTS
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2 teaspoons cider vinegar
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Pinch of sugar
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1/4 cup buttermilk
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1/4 cup vegetable oil
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Salt and freshly ground black pepper
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2 large Granny Smith apples, peeled and cut into thin matchsticks
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Two 6-ounce bunches watercress, thick stems discarded