There are six stages, all of which happen the traditional way.
Malting: The only part of the process we don’t do. Barley is steeped in water until it begins to germinate, then dried in a kiln to halt the process. This activates the enzymes that will convert starch to sugar. Wolfburn uses unpeated malt and peated malt depending on our requirements throughout the year.
Mashing: The dried malt is ground into grist and mixed with hot water in the mash tun. Natural enzymes break the starch down into fermentable sugars, producing a clear sugary liquid called wort.
Fermentation: Yeast is added to the cooled wort, converting sugars into alcohol over several days. The result is a beer-like liquid called wash, typically around 8% ABV.
Distillation: The wash is distilled twice in copper pot stills — first in the wash still, then in the spirit still. The distiller makes precise cuts to collect only the "heart" of the run: the cleanest, most characterful spirit. This is the new make spirit, typically around 65% ABV.
Maturation: New make spirit is filled into oak casks and moved to our seaside warehouses in Thurso. Scotch whisky law requires a minimum of three years. During maturation, the spirit interacts with the wood, gaining colour, softening in character, and developing flavour.
Bottling: Wolfburn is bottled at 46% ABV, without chill filtration. What goes in the bottle is as close to what came out of the cask as possible.