Step 1

Place the beef brisket joint in your slow cooker basin.

Step 2

Mix together the onion and sauce ingredients in a jug then pour over the beef joint.

Step 3

Cook on low for 8 hours. Take the beef out of the slow cooker and place it on a chopping board. Cut thick slices of beef with a sharp knife then shred the beef with two forks. Place the shredded beef back into the slow cooker and mix it into the sauce.