Scotch whisky is basically divided into 5 types:-
Single malt Scotch whisky
Produced from only water and malted barley at a single distillery by batch distillation.
Single grain Scotch whisky
Distilled at a single distillery but, in addition to water and malted barley, might involve whole grains of other malted or un-malted cereals.
Blended malt Scotch whisky
Blend of two or more single malt Scotch whiskies from different distilleries
Blended grain Scotch whisky
Blend of two or more single grain Scotch whiskies from different distilleries
Blended Scotch whisky
Blend of one or more single malt Scotch whiskies with one or more single grain Scotch whiskies
All Scotch whisky must be aged in oak barrels for at least three years.
