The manufacture of wine barrels, called coopering, involves heating the barrels over a wood fire, so they can be bent and shaped. The charring that occurs on the inside of the barrel during this process is referred to as toasting. The level of toasting that the barrel has determines the toasty flavors imparted in the wine. Additionally, Canadian Oak Coopering uses a wood fire in the toasting process, which imparts an added flavor from the smoke of the fire. When used appropriately, the toasty flavors can have a significant beneficial effect on the wine's flavor.