Smoking is the process of cooking and flavoring food by exposing it to the smoke from burning or smoldering plant materials - most notably wood. In Europe, alderwood, oak and beech are traditional smoking woods. In North America, hickory, mesquite, oak, pecan, alder, maple, and even fruit-tree woods (apple, cherry and plum) are commonly used for smoking. Other fuels besides wood can also be employed, sometimes with the addition of flavoring ingredients.
Hot smoking, a process that takes several hours, can be used to fully cook meats or fish; barbecue is a form of hot smoking. Generally, hot-smoking involves holding the food directly above the fire, or in an enclosure that is heated by the fire, where the cooking temperature is usually between 165–200°F. The temperatures reached can kill microbes throughout the food.
Cellulose found in hardwoods are basically aggregate sugar molecules. When these molecules are cooked, they effectively caramelize, producing sweet, flowery, and fruity aromas. Other molecular components found in hardwood also produce a number of distinctive aromatic elements when cooked, including smoky, spicy, and pungent compounds. Different species of trees have different cellulose characteristics, thereby imparting different distinct flavors to smoked foods.
