Gran's Barbecued Brisket

1 5-8 lb. brisket
1/4 c. liquid smoke
1/4 c. worchestershire sauce
1/3 c. Italian salad dressing
1/2 tsp Kitchen Bouquet (browning sauce)
1/4 c. beef bouillon
1 T. finely minced garlic
1 (16-oz) bottle of your favorite barbecue sauce

First day: Remove the fatty membrane from the brisket. Place brisket on a large sheet of foil in a baking dish. Mix all ingredients with 8 oz. of barbecue sauce, and pour over brisket. Let stand 15 minutes. Then seal foil and place in refrigerater over night. Second day: DO NOT UNWRAP. Bake at *300 for 4 hours. Cool in refrigerator overnight. Third: Remove meat and discard fat and foil with juices. Slice brisket across the grain with a sharp knife and pour remaining barbecue sauce over meat. Reheat in oven at *350 for 30 minutes. Serves at least eight.