"This soup is super creamy in texture, but it contains very little actual cream. The butter and flour mixture -- what's called a roux -- gives it body and silkiness...."
INGREDIENTS
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1/4 cup (1/2 stick) unsalted butter
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1 medium yellow onion, diced small
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1/4 cup all-purpose flour (spooned and leveled)
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4 cups low-sodium chicken broth
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1 1/2 pounds carrots, chopped
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1/2 cup buttermilk
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Coarse salt and ground pepper