INGREDIENTS
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5 tablespoons unsalted butter
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1/2 cup finely chopped onion
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1/2 cup finely chopped celery
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1/2 pound crabmeat
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2 1/2 cups whole milk, divided
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2 cups heavy cream
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2 cups half and half
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1/2 teaspoon Worcestershire sauce or to taste
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1/4 teaspoon Old Bay seasoning
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salt and pepper
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1 1/2 tablespoons cornstarch
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1/4 cup dry sherry