Asian rice lagers explained
Pale, dry lagers brewed with rice are common across Asia and beyond. They are made that way for good reasons. The technique is worth understanding.
What rice does in a beer
Rice is an adjunct: a source of fermentable sugar other than malted barley. In a lager it does three useful things. It adds starch that converts to sugar, so the yeast has plenty to ferment. It contributes almost no flavour of its own. And it contains very little protein or polyphenol, so the beer ends up lighter in body, paler in colour and often brighter in clarity.
The result is a beer that is dry, crisp and easy drinking. Proportions vary by brewery. Rice commonly makes up somewhere around a fifth to a third of the grist. Check any figure against the brewer's own recipe.
Why it suits hot, humid places
Across much of Asia the climate is warm and humid. A cold glass of light, dry lager is refreshing in a way that a heavy ale is not. Rice grows throughout the region, so it is a local and often cost-effective raw material. See our guide to designing a lager for hot countries for more on how climate shapes the beer.
Cost matters too, but it should not be the whole story. A brewer who adds rice only to save money tends to produce thin beer. A brewer who adds it for lightness and a dry finish uses it with a plan.
How rice is brewed
Raw rice cannot just be thrown into a mash. Its starch is locked in hard granules that only gelatinise at roughly 70 to 80 °C, higher than a typical barley mash temperature. Brewers use a cereal cooker: rice is milled, mixed with a little malt and water, heated until the starch swells and thins, then added to the main mash. Malt enzymes then convert the liquefied starch.
Using flaked or pre-gelatinised rice skips this step because the starch has already been cooked. Smaller breweries often choose flaked rice for exactly that reason.
After the cooker, the mash proceeds as normal. Rice has no husk, so it adds nothing to the grain bed that the wort drains through. In a grist with a lot of rice, the malt husk has to keep that bed open. Rice starch conversion is also slow if the malt's enzyme power is low, which is why pale base malts with high diastatic power are preferred.
Taste and appearance
A good rice lager is straw to pale gold, with fine, persistent foam. Aroma is mild: a little cereal sweetness, perhaps a faint note of fresh bread. The finish is dry, because rice-derived sugars ferment almost completely. Bitterness is light to moderate.
Faults to watch for are the same as for any lager: diacetyl, DMS and oxidation. Pale beers have nowhere to hide them. Our off-flavours guide explains each one.
Fermentation should be cool, around 8 to 13 °C, followed by a cold conditioning period. This clears sulphur compounds and smooths the finish. A rushed lager shows it in the glass.
Rice lager is not rice wine or sake
This causes a lot of confusion. A rice lager is a barley malt beer with rice added. Sake is brewed from rice alone, using a mould called koji to convert starch. It is a different drink. Some traditional rice beers made at home across Asia use other methods again. When you see rice on a label, check whether it means an adjunct in a lager or the main ingredient of something else.
Rice lagers are brewed in many countries. The brewing idea is shared even when recipes are not. For a wider view of how lagers differ around the world, our beginner's map of world beer styles is a good next read.
Serving and pairing
Serve at 3 to 5 °C in a clean glass. Rice lagers pair well with fried food, grilled fish and steamed dumplings, where carbonation and dryness refresh the palate. Our guide to pairing beer with Southeast Asian food has more ideas.
Is a rice lager a lesser beer?
Not necessarily. Some drinkers dismiss adjunct lagers as cheap. In practice, the question is whether the beer is well made. A rice lager that is fermented cold, lagered properly and packaged without oxygen can be superb in its own style. A poorly made all-malt beer is no better for being all malt. Judge by the glass.
Common questions
Why do brewers add rice to lager?
To lighten body and colour, add fermentable sugar and give a crisp, dry finish. Rice has little flavour of its own.
Does rice lager contain rice wine?
No. It is beer made mostly from barley malt with rice as an adjunct. Sake and rice wine are different drinks.
Is rice lager gluten free?
Not by default. Barley malt still forms most of the grist, so it contains gluten unless specially made and tested.
How much rice goes into the grist?
It varies by recipe. A common range is roughly a fifth to a third of the grist, but each brewery sets its own.
