BARBECUE OVENS OR SMOKE OVENS: Barbecue ovens are like conventional ovens, but with one important difference: they are able to produce wood smoke, which surrounds the food and flavours it while it bakes or roasts. Special woods, such as hickory, mesquite, or various fruit woods such as apple or cherry, must be added to the smoke-producing part of the oven, according to the manufacturer’s instructions. This device is usually nothing more complicated than an electric heating element that heats small blocks or chips of the wood so that they are hot enough to smoke but not hot enough to burst into flame. Depending upon on the model, various cooking features are available. Thus, ovens may have smokeless roast/bake cycles, cold-smoke cycles (with the smoke element on but the oven off), holding cycles, and broiling capabilities.