Preheat oven to 350° F.

Place corned beef brisket, along with its spices and red wine, in a pot. Add enough water to cover the brisket. Place the lid on the pot and simmer very gently for approximately 2 to 2 1/2 hours or until fork tender.

Meanwhile, prep the Roasted Root Vegetables and Leeks and make the Cranberry Horseradish Sauce.

When the corned beef is fork tender, add cabbage to the pot and poach for about 15 minutes. At this time you may put the Roasted Root Vegetables and Leeks into the oven.

Remove the warm brisket from the cooking liquid and trim it of any excess fat. Remove the cabbage and place on a heated serving platter. Strain about 2 cups of the cooking liquid into a small pot and bring to a simmer. Stir in the arrowroot mixture and stir until thickened, about 3 minutes. If you like, stir in 1 tablespoon of chopped dill or parsley.

Slice brisket thinly across the grain, and place it on the platter next to the cabbage. Pile on the Roasted Root Vegetables and Leeks and sprinkle with chopped dill or parsley. Serve the thickened corned beef jus and Cranberry Horseradish Sauce on the side.