Scotch whisky is one of the most charming tipples out there, with an incredible variety on the market to choose from. There are plenty of distinctions between different types of whiskies, with one of the most recognisable being between the peated and unpeated styles. There’s not just a huge difference in flavour between these two types, but also the aroma, history, and even environmental impact. Let’s take a look at what makes these two whisky types so distinct and why they both deserve a place on your top shelf.
This is a collaborative post.
What makes whisky peated?
‘Peat’ refers to partially decomposed vegetation, such as sphagnum moss, grasses, and shrubs, formed in bogs over centuries. This is instrumental in the making of peated whisky. Distillers burn peat under germinating (malted) barley so that the smoke infuses its phenolic compounds into the grain. These phenols produce the signature smoke, earthy, medicinal, or tar‑like aromas so recognisable in the final spirit.
Phenolic compounds are measured in parts per million (PPM). You’ll often find that PPM levels vary widely between bottles. For example, lightly peated whiskies usually sit below 15 PPM, moderately peated whiskies around 20 to 30 PPM, and heavily peated whiskies above 30 PPM. Some experimental bottles, like Bruichladdich’s Octomore, can even reach phenolic levels above 100 PPM! The impact of the peat differs depending on the peat type and region. Islay peat tends to create intense, medicinal smoke, while mainland and Highland peat can be earthier and more floral.
What is unpeated whisky?
Unpeated Scotch is crafted using dry heat, like gas or anthracite, to stop germination in barley, avoiding the whisky from being influenced by the smoke. This results in a whisky that highlights the natural flavours and aromas of malt, cask character, and terroir without a mask of smokiness.
Unpeated whiskies often have more fruity, floral, and malty notes, as these are influenced by the cask types – vanilla from ex‑bourbon, dried fruit and spice from ex‑sherry, etc. They showcase regional uniqueness. For example, Speyside whiskies tend toward sweet fruit, Highlands can be rich and full‑bodied, and Lowlands are delicate and easy drinking.
How do flavour profiles differ?
Peated Scotch is more often than not bold and smoky, with flavours ranging from ash, tar, iodine, seaweed, and even medicinal notes. It’s complex, usually layered with underlying fruit, sweetness, or maritime salinity. Many whisky collectors say this is typical of Islay drams like Laphroaig, Ardbeg, and Lagavulin.
On the other hand, unpeated Scotch emphasises barley and cask-driven flavours, such as orchard fruits, vanilla, honey, nuts, and spice. Without peat smoke, the subtler distillery character can shine through and take centre stage.
Tasting and pairing notes
If you’re wondering what the best way to taste peated and unpeated whiskies is, here’s a quick guide on how to pair them best:
Peated whisky
Peated whiskies have a bold and smoky character, meaning they pair well with hearty foods like smoked meats, rich cheeses, dark chocolate, and seafood.
Unpeated whisky
Thanks to their lighter, sweeter profiles, unpeated whiskies amazingly complement foods like seafood, poultry, pastries, and fruity desserts.
Should you choose peated or unpeated whisky first?
Whether you decide to choose peated or unpeated whisky first all depends on your personal taste, as well as the occasion you’re buying a bottle for. If you’re craving something bold and smoky, we’d definitely recommend trying peated whisky first. Or do you prefer something mellow, elegant, and cask-driven? If so, unpeated is the way to go.
If you’re new to Scotch, though, our advice is to try both and explore seasonal preferences. Many fans tend to rotate styles throughout the year, so you might find that you like both, just during different seasons. Of course, there’s always the possibility of experimenting beyond Scotland. Other countries, such as Japan, the USA, and Ireland, all make amazing peated and unpeated whiskies, so don’t be afraid to reach out and explore!
Learn all about rare scotch whisky today!
The peated/unpeated divide defines a lot about Scotch whisky’s character. Peated whiskies are bold, smoky, and atmospheric – a sensory journey through peat bogs and campfires. On the other hand, unpeated malt is a showcase for barley, cask, and regional nuance. Both styles offer depth, versatility, and delight, and the best part is that there’s always more to discover, one whisky at a time. If you want to learn more, check out all about rare Scotch whisky here. You’ll be able to answer all your outstanding questions about peated and unpeated whiskies, as well as other types from around the world. Cheers!