Smoked malts compared from beech to peat

How malt picks up smoke

Smoked malt is kilned with smoke drawn through the grain bed while it dries. Damp green malt takes up smoke compounds best, so the smoke goes on early in kilning. The fuel decides the flavour. Wood smoke brings phenols such as guaiacol and syringol, giving bacon, campfire and smoked ham notes. Peat smoke is heavier in cresols and other phenols that read as medicinal, iodine and tar.

Distillers measure peat character in parts per million of phenols. Brewers rarely see that figure on a beer malt sheet, which is one reason peated malt surprises people.

Beech smoked malt is the classic

Beech smoked barley malt is the malt of Bamberg Rauchbier. Its smoke is rounded and savoury, more smoked ham than bonfire. Because the base is a well modified pale malt with full enzyme power, it can make up a large share of the grist. Traditional Rauchbier often uses it for most or all of the base.

For a first smoked beer, start lower. At 20 to 30% of the grist, a Märzen or a porter carries a clear smoke note that does not dominate. At 50% and above you are in Rauchbier country. Our guide to beech smoked barley malt covers one maltster's version in detail and our Rauchbier guide covers the style.

Oak smoked wheat and the fruitwoods

Oak smoked wheat malt is the basis of the Polish style Grodziskie (also called Grätzer), a light, highly carbonated smoked wheat beer. Oak smoke is drier and sharper than beech, with less of the ham note.

Cherrywood and other fruitwood smoked malts sit on the sweet side, with a gentle smoke and a hint of fruit. Alder smoke, traditional for smoking fish in the Pacific Northwest, has turned up in smoked porters there. These malts generally suit 10 to 40% of the grist, depending on intensity. Smoke levels vary by maltster and by lot, so taste each bag.

Peat is a different animal

Peated malt is made for whisky. Heavily peated distilling malts are often quoted at around 30 to 50 ppm phenols or more. In whisky, distillation and long oak ageing soften that smoke. In beer, nothing does. Peat goes into the glass almost as it came off the kiln.

Use it in tiny amounts. At 1% of the grist peat is usually noticeable. Above 3 to 5% many tasters find it harsh, plastic or medicinal. A common myth links peat with Scottish ales. Traditional Scottish ales got their character from malt and long boils, not peat. Many judges score peat smoke as out of place in them. Our guide to peated malt in beer goes further.

Choose the beer before the smoke

Smoke works best on a malt-forward base with modest bitterness. Märzen, Helles, porter, Scotch ale and brown ale all carry it well, because their malt sweetness gives the phenols something to sit on. Heavily hopped pale beers are harder. Hop bitterness and smoke phenols both land on the back of the palate and can turn harsh together, so keep bitterness moderate when smoke is high.

Water matters too. Very high sulphate water sharpens smoke and bitterness alike. A balanced or chloride-leaning profile keeps a smoked beer round. Many Indian borewell supplies are high in hardness, so test before you brew a smoked beer rather than after the first batch tastes like an ashtray.

Usage rates side by side

• Beech smoked barley: 20 to 100% of the grist.
• Oak smoked wheat: up to the full grist in Grodziskie, 10 to 30% elsewhere.
• Cherrywood and fruitwoods: 10 to 40%, depending on intensity.
• Peated malt: 0.5 to 3%, rarely more.

A worked example for a 1,000 litre smoked Märzen: 150 kg Munich malt (60%), 75 kg beech smoked barley malt (30%), 20 kg Vienna malt (8%) and 5 kg light crystal (2%). That is 250 kg in total, a clear smoke on a rich malt body and an amber colour.

Smoke fades, so freshness matters

Smoke character in malt fades with time, especially once the bag is open. In a warm Indian store room, an opened sack of smoked malt can taste noticeably milder within a few months. Buy only what you will use soon, keep it sealed and cool. Taste a hot steep before each brew. Adjust the percentage to what the malt tastes like today, not what it tasted like when it arrived.

Smoke also fades in the beer, more slowly. A smoked beer that tastes heavy at two weeks may settle into balance at six. Getting smoke right is a matter of balancing it against malt sweetness, bitterness and the beer's lifespan. That kind of grist design is easier when you understand what each malt contributes.

Your first step: steep 50 g each of two smoked malts in hot water side by side and taste them before writing your next smoked recipe.

Common questions

Can I brew with 100% smoked malt?

With beech smoked barley malt, yes; it has full enzyme power and traditional Rauchbier uses it heavily. Never try it with peated malt.

How much peated malt should go in a beer?

Start at 0.5 to 1% of the grist. Above about 3% most tasters find peat smoke harsh or medicinal in beer.

Does smoke flavour fade in malt?

Yes. Smoke character in malt fades over months, faster once the bag is open and in warm storage. Taste before each brew.