1 gallon of Wright's® Hickory Flavored Liquid Smoke, the original liquid smoke product, is a concentrate made from the actual smoke of hickory wood. Because it's concentrated, you can easily vary the amount of smoky flavor in foods, from subtle to full and robust. Liquid Smoke contains no salt, fat or colors — only 2 calories per serving. Wright's Liquid Smoke delivers big barbecue taste to all your favorite foods.