Braised Sweetbreads in a Sealed Casserole

Braised sweetbreads is a dish that has many variations, but the one I like and that always makes me think of New Year’s Eve is this one when it has fresh truffles in it. But then almost anything with fresh truffles in it is wonderful, and if you do not have them, try wild mushrooms, and if you cannot get them fresh, reconstitute dried morels, cèpes, field mushrooms, etc., in stock and use them, reducing the stock and putting that in as well. It is a dish of kings that, once you have cooked