INGREDIENTS
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2 1/2 pounds red or white new potatoes, scrubbed and
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cut into quarters
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Kosher or coarse salt, to taste
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1/2 cup sour cream, regular or low-fat, or plain Greek or
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regular yogurt, or a combination
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2 tablespoons bottled horseradish
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2 tablespoons Dijon mustard
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1 tablespoon fresh lemon juice
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1/3 cup finely minced onion
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Freshly ground black pepper, to taste