Amazake Grows Up

Amazake is a thick, naturally sweet drink made from rice and koji, the same mould that underpins sake, miso and soy sauce. Once a seasonal drink tied to winter festivals, it became one of Japan’s fastest-growing beverage categories in the 2010s. Makers now want to place it next to kombucha and oat milk on wellness shelves overseas.

A very old drink with a new job

Amazake, literally “sweet sake”, has been made in Japan for more than a thousand years. In the Edo period (1603–1868) vendors sold it on the streets of Edo in summer as a restorative drink, which is why it still appears as a summer season word in haiku. In modern Japan it is best known as a warm drink served at shrines at New Year and at the Hinamatsuri doll festival in March.

Around the mid-2010s, Japanese media began calling it “a drinkable IV drip” because of its glucose, amino acids and B vitamins. Sales of packaged amazake rose sharply, and the drink moved from seasonal shelves into year-round chilled cabinets in supermarkets and convenience stores.

Two kinds of amazake

The distinction matters for export. Koji amazake is alcohol-free and needs no added sugar, so it fits “clean label” positioning and is suitable for children and for consumers who avoid alcohol. Products based on sake lees can contain traces of alcohol and face stricter labelling in some markets.

Who makes it

Morinaga Milk Industry

The dairy company has sold canned amazake since the 1970s and remains the best-known brand in Japan. Its range covers both the classic sake-lees style and an alcohol-free koji version.

Hakkaisan Brewery

The Niigata sake brewer produces a koji-only amazake using its brewing expertise. It became a popular premium product and a way for a sake maker to reach customers who do not drink alcohol.

Marukome

Japan’s largest miso maker entered the category with koji-based amazake under its “Plus Koji” line, applying its large-scale koji production to drinks.

Dozens of smaller sake breweries and miso makers also produce local amazake. For many of them, it is a way to use existing koji rooms and equipment while domestic sake consumption keeps falling.

The wellness opportunity abroad

• Fermentation trend — Consumers who buy kefir, kombucha and kimchi already understand the idea of fermented foods; koji itself has gained attention among Western chefs
• Plant-based and dairy-free — Koji amazake can be used like a plant milk in smoothies, porridge and baking
• Natural sweetness — It works as a sugar substitute in desserts and dressings
• Long shelf life — Heat-treated retail packs travel well

The challenges are real. Many consumers outside Japan have never heard of amazake, and the texture of rice grains can surprise first-time drinkers. Health claims such as the “IV drip” nickname cannot be used on labels in the EU or the US. The drink is also high in sugars, even without added sugar, which conflicts with low-sugar trends. Brands that succeed abroad tend to sell it as an ingredient or a smooth, flavoured drink rather than as a medicine.

What it means for overseas partners

• Distributors and retailers — Alcohol-free koji amazake is the most exportable format, with simple labelling and wide appeal
• Beverage and food brands — Amazake works as a natural sweetener or base for co-branded drinks, ice cream and plant-based yoghurts
• Food-service — Cafés can use it in lattes and smoothies to introduce the flavour before shoppers buy a full bottle

Conclusion

Amazake has already moved from a festival drink to an everyday health drink in Japan. The next step is translating that story for overseas buyers: explaining koji, choosing the alcohol-free format and positioning the drink as a versatile fermented ingredient rather than a curiosity.