A traditional type of copper still used in batch distillation. In Scotland and Ireland, malt whisky must be made in a pot still. “Pot still” may also refer to a type of Irish whiskey, made from a mash of a minimum 30% malted and a minimum 30% unmalted barley, with up to 5% of other cereals added, that is distilled in pot stills. To learn more, see “How To Make Whisky.”