What is a Stout?

CONTENTS

Introduction →Key facts →How does it taste? →Best Stout in hopIQ →Related style guides →

Guinness taught the world what stout tastes like — roasted, slightly bitter, creamy, surprisingly light in body for such a dark beer. And for decades, that was stout: one version, one brewery, one country. Then the craft beer movement arrived and rewrote the rulebook completely. Now there are milk stouts, oatmeal stouts, imperial stouts, pastry stouts, barrel-aged stouts, and oyster stouts. The family is enormous. But they all start in the same place: roasted barley.

The name "stout" originally meant a strong porter — "stout porter" — and the two styles share a common ancestor in 18th-century London dark ales. What distinguishes stout is the use of roasted unmalted barley, which gives the coffee-dry bitterness that Guinness made famous. Standard stouts sit between 4–6% ABV; Imperial Stouts can climb above 12%. The colour is near-black (SRM 35–40), but the taste ranges from lean and bitter to rich and dessert-like depending on the brewer's intent.

KEY FACTS

ABV Range

4.0–8.0%

IBU Bitterness

25–50

Colour (SRM)

SRM 35–40 near-black

Origin

London, 1700s

How does it taste?

Roasted grain upfront — coffee, dark chocolate, sometimes a tobacco note. There's sweetness underneath, more pronounced in milk stouts (which add lactose sugar) and oatmeal stouts (which add silky body). The finish is dry and slightly bitter from the roasted barley. The texture is where stouts often surprise people — Irish Dry Stout is lighter-bodied than it looks. Serve at 10–13°C. Too cold and the roast character turns harsh and flat.

You'll love it if you like…

coffee in general
dark chocolate and bitter flavours
porter and dark beer
complexity and depth
beer that feels substantial

Try something else if you want…

any roasted or coffee-like aroma
very dark-looking drinks on principle
refreshing light beer character
high carbonation or fizzy finishes

VS A SIMILAR STYLE

Porter is the obvious relative — both dark, both roasty, both sharing 18th-century London heritage. The traditional distinction: Porters use malted roasted barley (sweeter, more chocolatey); Stouts use unmalted roasted barley (drier, more bitter, more coffee-like). As a rough rule: if a dark beer is sweet and chocolatey, it's probably porter territory. If it's dry and bitter, it's stout territory. But the line blurs constantly — try both.

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