Single Grain Scotch Whisky is a whisky produced from malted barley and other grains at a single Scottish distillery. Most grain whisky is used to make blends, but some high quality grain whiskies are bottled as Single Grain. (Remember that the 'single' refers to the single distillery, rather than a single type of grain. It will always be a mixture of grains including malted barley). Blended grain whiskies do exist, with notable examples from independent bottler Compass Box, but these are rare.