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11.02.2025

10 min

Guide to a vertical tasting: how to get the most out of it

Before we start, what is vertical tasting anyway?

In short, a vertical tasting can also be called a ‘distillery exclusive’. This means whiskies with different characteristics but from the same producer or distillery. It can be used to summarise both self-produced bottlings and independent bottlings from a selected distillery.

A horizontal tasting describes bottlings with the same conditions, for example in age, year of production, cask maturation, but from different producers or distilleries. Possibly to find a commonality for further comparability, originating from the same region. However, the latter aspect does not necessarily have to be taken into account.

What is the best way to start the preparation for the tasting?

It's recommended that you choose 5 - 6 whiskies for your flavour journey. Make yourself aware of the facts about your whisky. Where does the whisky come from, which distillery is it from, are there any special features or influencing aspects regarding the whisky's country of origin, what is special about each whisky in your tasting? Cask maturation (age, cask type), mash bill, distillation, signature character of the distillery

  1. Pouring: The right glass (nosing glass)
  2. Nosing: Bring the glass to your nose
  3. Tasting: Gently swirl the whisky back and forth in your mouth
  4. Finish: Classify and define the remaining mouthfeel
For further assistance, we have prepared an example of a vertical tasting here and describe each step. I cordially invite you to get the whiskies I have selected and not to read on, but to follow along step by step. You will receive a free online tasting from us as a bonus.

(Here’s our guide for a vertical tasting + a guided Glenfiddich tasting for free as a bonus)

Your whisky experience: A vertical tasting with Glenfiddich (and me)

I recommend the use of a classic nosing glass. A glass that is bulbous at the bottom and tapers to a round opening at the top. Whether you choose one with a long stem or one with a short and thicker handle is irrelevant. You can also get inspiration from the glass in the picture selected for this guide.

Selected whiskies Glenfiddich 15yo, Glenfiddich 18yo, Glenfiddich Project XX, Glenfiddich Fire & Cane, Glenfiddich Orchard Experiment (all are Single Malt Scotch Whiskies)

Where does Glenfiddich whisky come from?

From the Glenfiddich distillery in Scotland's north-east town of Dufftown and the Scottish Speyside whisky region.

Extra knowledge: When it comes to Scotch whisky regions, opinions are divided. Some sources say there are 5 regions, others say there are 6. Personally, for reasons of location and the literal definition of the land itself, I agree with the categorisation of 6 regions. Highlands, Speyside (which was originally counted as part of the Highlands), Lowlands, Campbeltown, Islay and Islands.

The recognition of 5 regions excludes Islands and assigns the islands of the Outer and Inner Hebrides, as well as the Orkney Islands to the Highlands region.

Are there any special features or influencing aspects regarding the whisky's country of origin and what does that mean?

No special aspects, during the maturing process the whisky in the cask is exposed to all seasons and weather conditions. Glenfiddich matures all of its whisky in an impressive estate of over 40 warehouses with a capacity of up to 1.3 million casks. The casks are stored in Dunnage Warehouses (smaller warehouses that usually offer space for about 3 casks stacked high) and Palettised or Racked Warehouses (taller buildings with more space to stack up casks and enough room for the usage of a forklift).

Like all other distilleries, the Glenfiddich distillery has its own basic signature style, which is derived from various factors, including the mash bill and the stills. This means that the New Make Spirit already has some flavours, which are then influenced and expanded by the subsequent maturation in casks.

Typical flavours for Glenfiddich whiskies would be e. g. pears, malt, vanilla and berries.

Extra knowledge: The environment in which the whisky matures has a significant influence on the maturation process. The local microclimate is the decisive factor. The weather in Scotland tends to be fresher and wetter, which means that a longer maturation period ensures that the New Make spirit draws a wealth of flavours from the oak cask.

The slow maturation due to the cool temperatures is, to some extent, Scotland's speciality. The climate on the mainland is characterised by slightly warmer summers and cold, snowy winters and, in the case of island whiskies, the often harsh and cold, wet sea air also has an influence on the cask and the maturation process.

Apart from kilning over peat in the production process, this is how the famous Islay whiskies get their maritime iodine note in the flavour. Whisky matured in warmer regions, e. g. in India, requires only half the maturation time compared to Scotch. Due to the high temperature and humidity there, the whisky enters the cask very early and the whisky matures more quickly.

Accordingly, these whiskies are not bottled at a high age, as the Angels share is already quite high after a few years.

From here on, we take a look at each whisky one by one.

Glenfiddich 15 Years Old Our Solera Fifteen

What is special about this bottle of whisky in your tasting?

This whisky has matured for 15 years in Ex-Bourbon barrels, New/Virgin Oak Casks and Spanish Sherry casks. After long maturation in the respective casks, the whiskies from these casks are blended. The special thing about the ‘Solera Fifteen’ is the vatting in the solera process. Inspired by the Spanish sherry bodegas, where solera vatting is used, this whisky is the only one from the distillery to be produced using this special technique. The Solera vat was never emptied. It is always refilled in equal parts to ensure a constant flavour in production.

This whisky comes at 40% Vol., chill-filtered and with added colour

Pour the whisky in your glass (that’s your dram), then bring it to your nose. Smell carefully over the centre of the opening. Then move your hand swaying to the right and then carefully to the left. This is how we try to get air into the glass so that the whisky moves and more flavours are revealed. The glass can then be carefully swirled a little in a circular motion. The whisky continues to be smelled the whole time. Repeat the process until no new flavours can be detected and you are sure that you have caught everything.

Nosing: Floral bouquet, green apples and pears, vanilla, dark chocolate, mint, heather, toffee, cinnamon, cherries, blossom honey and orange zest.

Then the glass is brought to the lips. A small sip is taken, more like a drop, which opens the palette in the mouth. Then take another small sip and swirl it gently back and forth, trying to find associations with tastes and flavours to note. In between, while the sip of whisky is still in your mouth, you can smell the glass again to find more connections.

Tasting: Raisins, dried apricots, spice cake with candied fruit, marzipan, honey, baked apples, baking spices, salted caramel, clove pepper, spicy oak, sweet malt, crème brûlée.

After tasting, it is common to make a judgement about the finish of a whisky. How long does the oily, dry or warm mouthfeel last? Is the finish short, medium or long-lasting? What flavours are lingering or residual? Close your mouth and ‘listen to your tongue’.

Finish: Medium length. Vanilla custard, butterscotch, green fruits, Mon Chéri chocolates, spice and baking cocoa.

Glenfiddich 18 Years Old Perpetual Vat 04

What is special about this bottle of whisky in your tasting?

The 18 year old Glenfiddich whiskies are a small batch range. 150 casks are selected from the warehouse, Oloroso sherry casks and ex-bourbon barrels, which are then blended and bottled as a small batch. This whisky comes at 40% Vol., chill-filtered and with added colour.

Nosing: Light garden fruit, orange biscuits, red berries, fine spice, liquorice, caramel, dark roasted espresso beans, clove pepper, citrus notes, cinnamon, chestnut honey, cocoa.

Tasting: Oily. Candied fruit, baking spices, nuts, butter biscuits, maple syrup, spicy oak, orange zest, dark chocolate, dried fruit, sweet malt.

Finish: Medium length. Baking cocoa, oak, cinnamon baked apples, roasted walnuts, apricots, black tea.

Glenfiddich Project XX Experimental Series No. 02

What is special about this bottle of whisky in your tasting?

The second trial from Glenfiddich's Experimental Series describes the selection and marrying of 20 casks. Malt Master Brian Kinsman invited 20 whisky experts and brand ambassadors to choose a cask from the warehouse. These 20 casks are made up of: 17 first-fill bourbon barrels, 2 sherry butts, 1 port pipe. The Ex-Bourbon barrel gives vanilla, caramel and buttery notes, whereas the sherry and port gives more dry and nutty flavours but full of dark, sweet and dried fruits. This whisky comes at 47% Vol., non-chill-filtered and with added colour.

Nosing: Mild herbs, stewed fruit, rock sugar, dark fruit, malt, sherry, vanilla cream, coffee beans, blood orange, cinnamon, heather honey.

Tasting: Juicy apricots, dried figs, butterscotch, liquorice root, roasted malt, plums, nuts, dark chocolate, soft dates, almonds, clove pepper, ginger spiciness.

Finish: Medium length. Light stewed fruit, cocoa, honey, oak spice, malt, light peppery, liquorice.

Glenfiddich Fire Cane Experimental Series No. 04

What is special about this bottle of whisky in your tasting?

In the fourth experiment from the Experimental series, Glenfiddich used peated barley malt for production. After distillation, the New Make Spirit was first matured in ex-bourbon barrels and then finished in ex-rum casks for several months. This whisky comes at 43% Vol., chill-filtered and with added colour.

Nosing: Green apples with toffee, soft spicy campfire aroma, mandarins, orange zest, salted caramel, candied ginger, roasted almonds, acacia honey, gingerbread spices.

Tasting: Gentle wood smoke, ginger butter biscuits, vanilla caramel pudding, spicy oak, baked apples with cinnamon, roasted nuts, milk chocolate, spices.

Finish: Medium length and subtle smoky note lingers. Malty sweetness, walnuts, juicy pears and vanilla.

Glenfiddich Orchard Experiment Experimental Series No. 05

What is special about this bottle of whisky in your tasting?

The fifth and final effort in Glenfiddich's Experimental Series produces a whisky that has been finished for several months in British Somerset Pomona casks. The influence of the liqueur, which is a blend of apple cider brandy and apple juice, on the whisky promises to be a fruity experience. This whisky comes at 43% Vol., chill-filtered and with added colour.

Nosing: Fresh and fruity, pears and apples, citrus notes, vanilla, caramel, milk chocolate, mirabelle plums, hazelnuts, butter biscuits, malt, fresh oak.

Tasting: Medium bodied, toffee, caramelised pear, cinnamon, green tea, herbs, fresh fruit, orange zest, light ginger spiciness, cloves, pepper, cardamom.

Finish: Medium length. Typical cider notes, slightly dry, green fruit, fresh leather.


About the author

Daniela Rek

Daniela Rek

Whisky enthusiast and nerd. In the whisky game since 2016 and still diligent about exceptional drams. Continuously uncovering the depths of tasting notes of each whisky, bringing whisky closer to anyone interested and informing about whisky topics is a hobby and a way of life.

To the author