Beef Brisket 1 (5 or 6 pound) beef brisket Onion, garlic and celery salt 1 tablespoon liquid smoke 1/4 cup Worcestershire sauce 1 envelope onion soup mix 1 small bottle barbecue sauce Marinate brisket in a mixture of the onion, garlic and celery salts and liquid smoke. Rub in well and poke holes in meat to help tenderize it. Marinate overnight or at least 3 hours. Make a pouch of aluminum foil. Put meat in it and add salt and pepper to taste and Worcestershire sauce. Seal pouch well and bake at 275 degrees F for 4 to 6 hours. Open pouch and put onion soup mix and small bottle of barbecue sauce over brisket. Seal pouch again and bake 1 hour longer. Refrigerate for 1 hour before slicing across grain. After slicing, reheat in foil.