Mortlach Distillery is one of the oldest distilleries in Scotland, established in 1823 by James Findlater in Dufftown, Speyside.

Mortlach was known for using a unique distillation process called "2.81 distillation," which involved distilling the spirit three times through the wash still and then a fourth time through a smaller spirit still. This process was said to create a robust and complex whisky.

Teaninich is known for its unique distillation process. It uses a combination of traditional pot stills and a modernized type of column still known as a "mash filter," which is quite uncommon in Scottish whisky production.

Despite not having a wide range of single malt releases, Teaninich plays a significant role in contributing to popular blended whiskies from Diageo, such as Johnnie Walker and Bell's.

One of the distinctive features of Benrinnes is its triple distillation process. Unlike most Scottish distilleries, which use either double or single distillation, Benrinnes undergoes a third distillation, which can result in a different flavor profile.

The distillery uses traditional worm tubs as part of its condensation process. These worm tubs are made of coiled copper tubes immersed in cold water, which helps to condense the alcohol vapors back into liquid form.