TL;DR: our fourth day at the festival started with a classic, a distillery particularly known for their complex distillation process: Mortlach. The visit was very interesting indeed, and the distillery manager Kirstie didn’t shy away from nerdy details. 

(missed Part 5/Part 4/Part 3/Part 2/Part 1?)

On Sunday morning the sky was still overcast, it would start raining later in the day eventually. Oh well. After breakfast we wrapped up all our stuff: it was the last night in the camping, the following and last night of the holiday we would wild camp again, although we hadn’t figured out where yet. We left the camping driving towards Dufftown, in a backroad that goes past the back of the Speyside Cooperage, from which you can admire their casks pyramids. Being Sunday morning, Dufftown was very quiet, and not all cafes were open yet. We managed to park on the main road, in front of the local CoOp, and tried hunting for a coffee. After finding one, we walked our way towards our first appointment of the day: Mortlach distillery, the so-called beast of Dufftown.

It is a very old one, founded in 1823 after the Excise Act, and it was the only one in town until their manager at the time, William Grant, left to found Glenfiddich. In 1897 the distillery was expanded, and thanks to the work of the famous architect Charles Doig, the pagoda roofs were added. It was acquired by John Walker & Sons in 1923, but the company soon merged with Distillers Company Limited in 1925 (then United Distillers in 1987, Diageo from 1997). Before 2014, the only official bottling of Mortlach was the 16y “Flora and Fauna”, now discontinued and dearly celebrated (like most things of the past, the abuse of “’member-berries” is widespread in whisky-land…if you don’t know the reference, check South Park season 20).

A core range was introduced in 2014 (with some controversial 50cl bottles) and revamped in 2018, while the current age-stated range includes a 12y (Wee Witchie), a 16y (Distiller’s Dram), a 20y (Cowie’s Blue Seal) and a 14y travel retail (Alexander’s Way), plus the occasional Special Releases. The newmake spirit is mainly filled in ex-sherry casks, although you can find some independently bottled ex-bourbon matured expressions (we have an 11y from Signatory Vintage, a marriage of 2 ex-bourbon hogsheads, which is quite tasty). Mortlach whisky is quite famous to be meaty, and thus considered a malt for seasoned drinkers. Fun fact, the 16y (very decent in our opinion) worked quite well every time we’ve given it to friends (both beginners and casual whisky drinkers).

At the distillery we were given a welcome cocktail, a Mortlach-based Old Fashioned (this time with regular angostura, not the orange one like at Dailuaine), and the distillery manager, Kirstie, introduced herself. She’s a graduate form the Brewing and Distilling Master at Herriot-Watt University, and of course extremely knowledgeable: her explanations definitely gave value to quite a pricey experience. We also bumped into a couple of barflies at the tour, Angus and Graham, met back in November at the Aqvavitae’s Blind Challenge in Glasgow.

After the introduction, we started the proper tour: we moved outside in the courtyard, and then near the milling room, which hosts an old red Porteus mill. A notable difference was that they take a smaller cut of flour in their grist (8%) compared to other distilleries (usually 10%). In our understanding, one of the reasons is that their water to grist ratio is higher, 3.8 instead of 3.6. The mashtun looks very new, made of stainless steel and closed, with the usual window to check its inside. They only have two water runs instead of three, with the second being warmed up to get the sugars that are usually obtained in the third run (lasting 6.57 hours in total).

The walls of the fermentation room, where six Douglas Fir washbacks are located (wooden because of a combination of aesthetics and convenience, since they can be disassembled unlike stainless-steel ones, all replaced in 2016), are decorated with some nerdy facts about whisky making, like the formula to calculate the % abv of the wash using the gravity readings, and the graph showing the trends of different types of sugars digestion during fermentation. Their fermentation time is usually between 55 and 59 hours, never less than 50, and they work with yeast that can survive higher temperatures, around 35C.

We then moved to the still room with its 6 stills (3 wash- and 3 spirit-), very unusually of different shape and size. The distillation is very complex: wash-still #3 and spirit-still #3 are paired, and they work like in a regular distillery. The other wash-stills (#1 and #2) work together, but their distillation is (unusually) divided into two cuts, the first goes into spirit-still #2, while the second (heavier) gets re-distilled three times (with the other distillations feints) in the other spirit still, the Wee Witchie, and the cut is only taken every third distillation. If you are confused, no worries, we are too, but the idea is to provide different characters to the newmake spirit. Someone in the past made the calculation, and it turned out the spirit is distilled 2.81 times – it would be nice to see those equations (nerd alert! Nerd alert!).

As we moved outside, we could admire one of the other characteristics that made Mortlach popular: the 6 worm tub condensers, one for each still. It is believed this is what provides meatiness to the spirit. They are made of wood, except one which is made of metal because the wooden one started leaking – they told us it might be replaced at some point with a new wooden one. They take the cooling water for the wormtubs from the river Dullan, one of their 6 sources of water for all the process: remember that they produce between 3.5 and 4 million litres of alcohol per year! Finally, we ventured in the warehouse, where casks from many distilleries were resting, including many non-Diageo ones, surprisingly. Kirstie explained us the processes happening in maturation: additive (compounds from the wood affect the liquid), subtractive (compounds from the liquid are removed by the wood contact) and oxidative (the contact with air changes the liquid, as you will know if you ever had a bottle open for more than 4-6 months).

Back outside, Kirstie showed us where some buildings used to be, as well as their still existing but currently unused malting floor, on the other side of the road (at the moment part of it is used as deposit for the Dufftown Whisky & Heritage Centre). We went back to the meeting room to enjoy the (stingy, considering 80 quid) 3-dram tasting. These were the flagship Mortlach 16y (43.4%), Mortlach 15y Game of Thrones Six Kingdoms (finished in ex-bourbon casks and bottled at 46%) and a non-age statement (NAS) from the 2022 Special Release. We’re quite familiar with the 16y (we used to have it, and gifted some), and we had tried the 15y GoT once (nice to revisit), so we were very curious about the third, mostly because the RRP was insane for a NAS, well above £200. This expression was finished in Tawny Port, Red Muscato wine, Virgin Oak casks and bottled at cask strength (57.8%). Turned out, it was nice but not mind-blowing by any means, as you’d expect considering the fanfare.

Overall, this was a great visit, and Kirstie contributed to make it as nerdy as expected, for such a peculiar distillery like Mortlach. The price is a bit steep, £80 for a tour and 3 drams (+ cocktail), so it’s hard to recommend it. However, if you’re at the right moment of your whisky journey, it is definitely one to visit, despite the price. For us, it was worth it, and we look forward to more deep dives like this.

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The Mortlach Distillery Tour (Spirit of Speyside)

Price: £80.00 pp (April 2023)

Duration: 2hr

Tasting: 3 drams and a welcome cocktail, Mortlach 16 (43.4%), Mortlach 15 the Six Kingdoms (46%), Mortlach Special Release 2022 (NAS, 57.8%)

Target: a bit more seasoned whisky geeks and nerds

Value for money: not great

Highlights: the detailed tour and explanation of such a complicated distillation process

Recommended: only if you’re quite ahead in your whisky journey (see last paragraph above)

Link: https://www.malts.com/en-gb/brands/mortlach, https://www.spiritofspeyside.com/