Baking on wood is a healthy, low fat way of cooking. The porous surface of the plank absorbs moisture at room temperature which transfers when cooking to give a moist, juicy and flavorful result. In case of cracking there are two bolts which run through the width if the plank - these must be kept tight. The baking planks come in two sizes and are easy to clean. The baking plank can be re-used frequently. Full instructions and 7 recipes come on the packaging. Add subtle flavor to all of your favorite foods without any additional fat or oil. Simple to use