Place the brisket in a 3 litre slow cooker. In a bowl, combine the remaining ingredients. Pour over brisket. Cover and cook on low for 6 hours or until tender.
Remove the beef; set aside. Pour the sauce into a saucepan; cook, uncovered, over low heat for 13-15 minutes or until reduced and thickened, stirring occasionally. Slice the meat across the grain; serve with sauce.
Make sure all prepared ingredients are kosher. There are online sources to help navigate this.