A spiral still is a type of column still with a simple slow air-cooled distillation apparatus, commonly used for bootlegging. Column and cooler consist of a copper tube wound in spiral form. The tube first goes up to act as a simple column, and then down to cool the product. Cookware usually consists of a wine bucket in pp plastic. The heat source is typically a 300W dip heater. The spiral burner is popular because despite its simple construction and low manufacturing cost it can provide 95% alcohol.