Combine the glaze ingredients in a bowl, rub half of the mixture all over the brisket reserving the rest for later.
Place the brisket on a roasting rack in a deep baking dish. Add the hot stock/water into the tray and cover very tightly with foil or with a tight-fitting lid.
Roast for approximately 3-4 hours or until the brisket is fork tender.
Remove from oven and allow to rest with the cover in the liquid for 20 minutes.
Increase oven temp to 200c fan forced.
Carefully drain away the liquid from the pan, sprinkle the top of the brisket with the remaining sugar rub and bake until the sugar is caramelized, approx. 10 minutes