INGREDIENTS
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3 Tbsp. jalapeños
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4 oz. leeks
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1-1/2 tsp. Kosher salt
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1 tsp. black pepper
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1-1/2 oz. butter, lightly salted
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2 cups heavy cream
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1-1/2 cups half & half
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4 oz. cheddar cheese, grated
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4 oz. jack cheese, grated
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3 lbs. Idaho russet potatoes