6 to 7   lb. Brisket. Marinate overnight or at least 4 hours.

4    large Yellow onions  (sliced)

Place sliced onions on bottom of a baking pan & lay brisket on the onions. 
Put in a preheated 400 deg. oven uncovered until browned , about 45 minutes , then pour a regular coke over the brisket, cover & cook at reduced heat of 350 degrees for 2-1/4 Hours.