Instructions: Put the egg, garlic, lemon juice, parsley, green onions, Creole mustard and poblano in a food processor and puree for 15 seconds. With the processor running, pour the oil through the feed tube in a steady stream. Add the cayenne and salt and pulse once or twice to blend. Cover and let sit for 1 hour in the refrigerator before using. Best if used within 24 hours.

This recipe yields 1 1/3 cups of sauce.

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