Assuming your brisket is done to somewhere around 200-207F.
Rinse out a reasonably sized beer cooler with boiling hot water to warm it up, then put the wrapped brisket on a towel in there, and close it. It'll hold it's temperature and finish in there.
Rinse out a reasonably sized beer cooler with boiling hot water to warm it up, then put the wrapped brisket on a towel in there, and close it. It'll hold it's temperature and finish in there.