Grain whisky is whisky produced in a patent still by a continuous process.

Grain whisky has little flavour compared to malt whisky, which is produced in a pot still. However it is an important component of most Scotch Whisky. In Scotland, pure grain whisky is seldom bottled and is more often blended with malt whisky to produce a blended whisky. However, it is possible to buy bottles of single grain though they can be hard to find and are far less popular. The better blended whiskies are generally considered to be those with the largest malt whisky component, with the very best blends containing no grain whisky at all. These blends would also contain little if any of the strongest flavoured malt whiskies, which are produced specifically for blending with grain whisky.

A true scotch whisky fancier will respect and enjoy a grain whisky blend, in accordance with the Scottish tradition there's whisky and there's good whisky, but there's no bad whisky.