Nowadays, whiskey still can be found in both copper and stainless steel metal, having their unique characteristics. Although steel stills are durable, cost-effective, easier to clean, and do not corrode, however, individuals prefer the copper-made stills the most. Now, copper is the most effective conductor of heat which is essential for an appropriate procedure of distillation. Copper breaks-down harmful sulphur compounds and ester, and controls generation of toxic ethyl carboxamide during the purification stages. Copper increases or decreases the heat promptly, wherein an upgraded taste of alcohol can be produced.