What Is Peated Whisky? The Plain-English Guide

Peated whisky is Scotch whisky that's been flavoured with peat smoke during production. The result is a savoury, smoky, sometimes medicinal style of whisky that's a world away from the honeyed Speyside malts most beginners start with. It's also Scotland's most divisive whisky style — drinkers tend to love it or hate it, with not much middle ground.

This guide explains exactly what makes a whisky peated, how the smoke gets in there, what PPM actually means on a bottle, and which bottles to try first if you're peat-curious (and which to avoid until you've built up to them).

Quick Answer: Peated whisky is whisky made from malted barley that was dried using peat-fuelled fires, leaving phenolic compounds in the grain that carry through distillation and ageing into the final spirit. The result tastes of smoke, salt, iodine, tar, or burned heather — depending on intensity. It's mostly associated with Islay, but Talisker (Isle of Skye) and Highland Park (Orkney) are also peated. Beginners should start with Highland Park 12 or Bunnahabhain 12 (almost unpeated), not Laphroaig 10.

How peat gets into whisky

Whisky starts as barley. To turn that barley into something that can be fermented, it has to be malted — soaked in water until it starts to germinate, then dried before the new shoots can use up the starches. That drying step is where peat enters the story.

Historically, malted barley was dried over peat fires for one practical reason: in places like Islay, where there's barely a tree on the island, peat was the only fuel available. The phenolic smoke from the burning peat permeated the wet barley, lodging in the grain. When that barley was then mashed, fermented, distilled, and aged, the phenolic compounds carried right through to the final whisky.

That's still how modern peated whisky is made — though most distilleries now use industrial drum kilns rather than open peat fires, and most buy their malted barley pre-made from specialist maltsters (Port Ellen, Bairds, Crisp). The peat itself comes from peat bogs cut for the purpose, mostly on Islay, Orkney, and St Fergus near Aberdeen.

The longer the barley is exposed to peat smoke during kilning, the more heavily peated the resulting spirit. That's measurable.

What PPM actually means

You'll see numbers like "30 PPM" or "55 PPM" on peated whisky labels and tasting notes. PPM stands for parts per million phenols — a measurement of how many phenolic compounds are present in the malted barley before fermentation.

A rough scale, based on the level in the malt itself:

Intensity	PPM (malt)	Examples
Unpeated	0-2	Most Speyside malts; Glenfiddich, Aberlour
Lightly peated	5-15	Highland Park 12, Bunnahabhain 12 (most expressions), Springbank 10
Medium peated	15-30	Talisker 10, Bowmore 12
Heavily peated	30-50	Laphroaig 10, Ardbeg 10, Lagavulin 16
Extreme	50-100+	Octomore (Bruichladdich), some Ardbeg supernovas

Two things to know about PPM numbers:

1. The figure on the label is the malt, not the bottle. The actual phenols in the final whisky are typically 30-50% lower than the PPM at malting — distillation and ageing burn off some, particularly the lighter aromatic phenols. A 50 PPM malt might produce a whisky tasting like 25-30 PPM by the time it's bottled.

2. PPM doesn't equal perceived smokiness. Two whiskies with the same PPM can taste wildly different. Cask choice, ABV, distillation cuts, and ageing climate all affect how the smoke comes through. Highland Park (~20 PPM) tastes less smoky than Talisker (~18 PPM) because Highland Park is also heavily sherried, which masks the peat.

What peated whisky tastes like

The signature peated-whisky descriptors come in a few flavour families:

• Smoke — wood smoke, BBQ, charred meat. Universal.
• Maritime — salt, seaweed, sea spray. Strong in Islay malts (especially Bunnahabhain and Caol Ila).
• Medicinal — iodine, TCP, antiseptic. The famous (or infamous) Laphroaig character.
• Earthy — damp earth, moss, peat itself. Highland Park leans this way thanks to heather-based peat.
• Tarry — coal tar, burnt rubber, creosote. Heavy Ardbeg territory.
• Sweet smoke — burnt sugar, treacle, smoked dried fruit. Often the result of sherry maturation on a peated spirit.

The geography of the peat itself matters. Islay peat is wet, coastal, and rich in marine plants, which gives the famous medicinal/iodine character. Orkney peat is dry, full of heather, which gives Highland Park its distinctive smoky-honey profile. Mainland peat from places like St Fergus is more standard "wood smoke" with less of those localised character traits.

Where peated whisky comes from

Most peated Scotch comes from a small handful of distilleries — far fewer than people assume.

Islay (8 working distilleries, almost all peated to some degree): Laphroaig, Ardbeg, Lagavulin, Bowmore, Caol Ila, Kilchoman, Ardnahoe, and Bruichladdich (the Port Charlotte and Octomore lines — though their standard Classic Laddie is unpeated). Bunnahabhain is the Islay outlier — primarily an unpeated distillery, despite being on the same island.

Isle of Skye: Talisker is medium-peated and the obvious example. Torabhaig (newer, since 2017) is also peated.

Orkney: Highland Park is lightly peated using local heather peat. Scapa is unpeated.

Mainland Highlands: Ardmore is the main peated Highland malt — distinctive because it's gently peated, sweet, and not maritime at all. Others (Tomatin, BenRiach) produce occasional peated expressions but their core ranges are unpeated.

Campbeltown: Springbank makes three styles — Springbank (medium-peated), Longrow (heavily peated), and Hazelburn (unpeated) — all in the same distillery.

That's it. The other ~120 active Scotch distilleries are almost entirely unpeated.

Where to start if you've never tried it

The most common mistake new whisky drinkers make is starting with Laphroaig 10 because someone told them it's the "real" peated Scotch. It's brilliant whisky for someone who already loves peat, but as a first peated drink it can be genuinely off-putting. The medicinal/iodine character is challenging when you haven't built a baseline.

The proper progression:

1. First peated dram: Highland Park 12 (~£45). Lightly peated, sherry-cask-balanced, more honey than smoke. If you can't enjoy this, peat probably isn't for you.
2. Building up: Talisker 10 (~£45) — proper smoke but balanced with pepper and maritime salt, not iodine. The bridge between light and heavy peat.
3. Crossing into Islay: Bowmore 12 (~£45). Properly Islay-peated but with significant fruit and oak character underneath.
4. The Islay heavyweights: Caol Ila 12 (£50) or Lagavulin 16 (£75) when you're ready. Laphroaig 10 and Ardbeg 10 are the deep end — earn your way there.

Full progression with bottle-by-bottle notes: Best peated whisky for beginners.

Frequently asked questions

Is peated whisky the same as smoky whisky?

Effectively yes — "smoky" is the more accessible English term for what peat-flavoured whisky tastes like. All peated whisky is smoky; some smoky-tasting whiskies (a small number of charred-cask bourbons) get there by other routes, but in Scotch the smoke comes from peat.

What is the difference between peated and unpeated whisky?

The malted barley used to make peated whisky was dried over peat fires; the malt for unpeated whisky wasn't. The resulting spirits taste fundamentally different — peated tastes smoky and savoury, unpeated tastes fruity or honeyed. See our full peated vs unpeated guide.

What does "peated" mean on a whisky bottle?

It means the malted barley used to produce the whisky was dried using peat smoke, leaving phenolic compounds that carry through to the final spirit. If a Scotch label says "peated" or "smoky", that's what they're referring to. PPM numbers (5, 30, 80) measure the intensity.

What is the most heavily peated whisky?

Bruichladdich's Octomore range. Each release is super-peated, regularly 80-200+ PPM at malting — vastly heavier than anything else made commercially. The current Octomore 14.3 hits 214.2 PPM. These are not beginner whiskies; they're specialist releases for committed peat drinkers.

Is bourbon ever peated?

No. Bourbon is American whiskey made from at least 51% corn and aged in new charred-oak barrels — no peat involved. The smokiness sometimes attributed to bourbon comes from the charred barrel, not peat. If you want smoky whisky and you've ruled out Scotch, look at peated Irish whisky (Connemara) or peated Japanese (Hakushu).

Is peated whisky an acquired taste?

For about two-thirds of drinkers, yes — most people don't enjoy heavy peat on first try. About a third never come to like it, and that's fine. There's plenty of excellent unpeated Scotch for the rest of your drinking life.

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See also: Peated vs Unpeated Whisky · Best Peated Whisky for Beginners · Islay vs Speyside Whisky · Scotch Whisky Regions Explained