Your Oyster Recipe of the Day: Oyster Gratin from Chef John Besh via Mobile Bay Magazine. This recipe is like a spa day for oysters. They get gently shucked, patted dry, salted and peppered, placed back into their shells with an onion and garlic sauce, then covered with a blanket of breadcrumbs. How good are they? Well, Besh makes them three dozen at a time.