2 tsp. meat tenderizer
1/2 tsp. celery salt
1/2 tsp. season salt
1/2 tsp. garlic salt
1/4 c. liquid smoke
1/4 c. Worcestershire sauce
1 1/2 c. barbecue sauce

Place brisket in foil. Sprinkle tenderizers and seasonings on both sides. Pour liquid smoke, Worcestershire and barbecue sauce on top. Cover and marinate in refrigerator 6-10 hours. Place foil-wrapped in crockpot. Cover and cook on low setting 10-12 hours.