. Kingsford Low & Slow Charcoal Briquettes, 16 Pound Bag (Pack of 2). What sets these briquettes apart is their low ash formula, making them ideal for use in ceramic grills and smokers. Thatâs why we created Kingsford Low and Slow Premium Charcoal Briquettes that burn longer than Kingsford Original and are specially designed for those who appreciate the art of slow cooking.