Place brisket in pan/slow cooker/crock-pot. Salt and pepper to taste, and sprinkle with garlic powder.
Add other ingredients over top of brisket.
Cover tightly with aluminum foil and roast at 350°F for 3 hours and 15 minutes, or until tender. Alternatively, cook in slower cooker/crock-pot on low until tender.
Slice brisket thinly and place in a pan. Cover with sauce.
Freeze for later use or refrigerate. Slicing, freezing, and reheating it seems to make the meat more tender.