1 Combine all ingredients except chuck roast.
2 Place about half of the sauce ingredients in the bottom of the slow cooker; Nestle chuck roast into the sauce. Top with remainng sauce.
3 Cover and cook on HIGH setting for 6 hours. At the end of the six hours, remove cover and pierce meat with a fork. If meat is extremely tender; shut off slow cooker.
4 If meat isn''t quite done, baste with sauce and cover and cook for an additional 1 to 2 hours. Meat will literally fall apart when pierced with fork.
5 Remove meat (carefully) to a large bowl. Shred meat with two forks. Return meat to sauce in slow cooker and combine.
6 Serve shredded beef and sauce on challah rolls or other soft rolls.
Optional: Place chuck roast and sauce in roasting pan. Cover tightly and cook in conventional oven at 350 degrees for 3-1/2 to 4 hours, or till meat is extremely tender. Shred meat in sauce and serve as directed above.