Malt whiskey is a type of whiskey made primarily from malted barley. The production process involves mashing the barley, fermenting it with yeast, and distilling the liquid. It is typically aged in wooden casks, which contributes to its flavor and character. There are two main types of malt whiskey: single malt, which comes from one distillery, and blended malt, which combines malts from different distilleries. Countries like Scotland and Ireland are famous for their malt whiskeys, each offering unique styles and tasting notes influenced by local traditions and ingredients.