Barbecue Brisket
["1/3 c. liquid smoke", "1 tsp. garlic salt", "1/2 to 1 tsp. pepper", "1 tsp. seasoned salt", "1 tsp. onion salt"]
["Marinate at least 12 hours.", "Bake at 325\u00b0 for 4 hours; wrap in foil or cover pan."]
["liquid smoke", "garlic salt", "pepper", "salt", "onion salt"]