BARREL AGED GIN
No. 2 - Koskue (now rebranded as Kyrö Dark Gin) - Kyrö Distillery - Finland - 42.6%
I've written about Kyrö Distillery recently in my post about their Boutique-y Gin collaboration, Bog Gin, so I won't go into much detail again about their distillery, but for those who are unaware, they use rye as their spirits base and their dark gin has been rested in white oak casks for 3-12 months and has an orange peel and black pepper distillate added to the final blend. It has 17 botanicals including birch leaves, meadowsweet, cranberry and orange peel.
For my serve I've gone a little unconventional perhaps and also low alco, but the orange immediately made me think negroni. I played about with the botanical profile as well and the result was delicious. The gin itself is sweet, spicy and really smooth with the piney juniper holding throughout.
25ml Koskue Aged Gin
25m Lillet Blanc Vermouth
25ml Everleaf Aperitif - vanilla, saffron, gential, orange blossom and voodoo lilly
A few dashes of Bitter Truth Peach Bitters
50ml Cranberry Juice
US law states that only new casks are allowed for aging whisky, whereas here in Scotland for example, they can use old barrels. But there is no law dictating what distillers must use for aging gin. Generally oak is used, but there are some distillers using purpose made juniper wood casks too. Ex-bourbon casks are the most widely used for aging gin, but cognac, whisky, port and sherry casks are also used and these will impart further qualities and layers of flavour.
Aging gin is certainly a skill and takes into consideration more factors than you initially realise. The ABV of the gin helps extract the tannins from the wood and botanical proportions may need to be adjusted as they can be lost through the aging process. The size of the barrel also affects how fast it will mature due to the surface area in contact with the spirit. The type of wood or its origin, and the amount of barrel charring can also change flavour and strength, as does climate or location of where the barrels are stored. And sometimes barrels aren't even used, as some distillers favour adding wood chips to their storage tanks, so should you be inclined to experiment, you could add a piece of charred oak to a bottle of gin and see what result you get. For further complexity and also consistency, a batch of spirit may be aged in a mix of old and new barrels or even a mixture of barrel types and then blended.
Gin also has low congeners. They are the compounds which alter the flavour and aroma of a spirit and having lower levels means that it will limit how much the flavour of the gin will change. Distillers will generally rest their gin in barrels for at least 3 weeks, but there are aged gins rested for 10 or 15 years, even longer. It's all a balance of how much you want the wood to change the flavour of the gin and at which point the key (juniper) flavours start to diminish too much for it to be recognised as gin. Most importantly, for gin lovers, we want it to retain its "ginniness" and as we can see above, there are many factors which will contribute to the end result.
Finding the perfect serve for an aged gin is also a dilemma, as does one treat it as gin or whisky? I don't think a G&T works as I personally see these as leaning more towards whisky or cognac serves, so next time I'll touch a bit more on ideal serves for aged gin.