The day before: Dry-brine the roast by rubbing equal amounts brown sugar and salt all over the exterior of the roast. 2 to 3 tablespoons of each should be enough to cover the roast. Refrigerate at least 8 hours, preferably overnight.

To prepare: Remove roast from fridge. Rinse thoroughly to remove dry-brine, set in large roasting pan, and pat dry.

Heat olive oil in a large frying pan. Sauté onion, carrots, celery, mustard seeds, bay leaf and garlic until tender, 5 to 8 minutes.

Stuff half the vegetable mixture inside the pocket, and spread the rest over the outside of the roast.

Wrap the roast very tightly in two layers of foil (wrap the meat itself; not the pan). Roast at 250°F for 5 hours.

Let cool in foil. Can be served hot or cold.

Recipe by Naftali Hanau and Isaac Bernstein

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