- Place all of the sauce ingredients in a large pressure/slow cooker and stir to combine.
- Place all of the measured brisket ingredients, except the brisket, in a medium bowl and stir to combine.
- Evenly coat the brisket with the spice rub and place the brisket into your pressure/slow cooker. Cover and cook on low until fork-tender, about ten hours. If using the Instant Pot, set the timer to 2 hours. Check the meat can easily be pulled away with a fork. If not, cook for a further half an hour.
- Transfer the brisket to a serving dish. Slice or pull the meat. Pour the sauce from the pressure/slow cooker to serve.
Tip: Serve with pickled onions, limes, soft shell tacos and your favourite salad.