"Butter and the tang of buttermilk with blue cheese give these 5 ingredient mashed potatoes..."
INGREDIENTS
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2 1/12 pounds russet potatoes
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1 teaspoon kosher salt (plus more for seasoning)
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2/3 cup buttermilk
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6 tablespoons butter
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4 ounces blue cheese (crumbled, plus more for garnish)
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1/4 cup chives (plus more for garnish)
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Freshly ground black pepper