INGREDIENTS
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2 pounds russet potatoes, peeled and cut into 2-inch dice
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4 cloves garlic
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1 cup heavy cream
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1/2 cup unsalted butter
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2 teaspoons kosher salt
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1/2 teaspoon white pepper
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pinch of freshly grated nutmeg
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1/2 cup sour cream
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1/2 cup shredded cheddar cheese
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1/2 cup thinly sliced green onions, white and green parts