Is it good for gut health?

It supports gut health through prebiotic compounds.

How long does it last?

About 5–7 days when stored in the refrigerator, depending on temperature and hygiene conditions.

Amazake Recipe and Benefits — How to Make Japanese Fermented Rice Drink at Home - Hakkology

By Hiromi | Hakkology

Have you ever wondered what Japanese people drink for natural energy, gentle sweetness, and everyday nourishment — all in one cup?

That drink is amazake (甘酒), a traditional Japanese fermented rice drink enjoyed for at least 1,000 years.

I first discovered amazake when I was struggling with severe skin problems.
A friend suggested I try drinking it daily, and within weeks, my skin began to calm down.
That single cup of amazake eventually led me to the world of fermentation — and today, I teach it as part of my daily work here in Japan.

In this article, I’ll walk you through everything you need to know about amazake: what it is, how it tastes, its benefits, and how to make it at home using simple tools you likely already have.

What Is Amazake?

Amazake (甘酒) literally means “sweet sake” in Japanese — ama (甘) means sweet, and sake (酒) refers to alcohol.

However, the most common type — rice koji amazake — contains little to no alcohol (only negligible or trace amounts) and is enjoyed by people of all ages in Japan.

Amazake is made from rice and koji mold (Aspergillus oryzae).
During fermentation, enzymes produced by koji break down rice starch into natural sugars, creating a naturally sweet and creamy drink without added sugar.

Amazake vs Sake — What’s the Difference?

Although both are made from rice, amazake and sake are very different:

	Amazake (Rice Koji Type)	Sake
Alcohol	None or trace	Yes (15–20%)
Sweetness	Naturally sweet	Varies
Fermentation	Koji only	Koji + yeast
Who can drink it	Most people	Adults only

You can think of amazake as a gentle, non-alcoholic fermented drink — very different from sake.

Two Types of Amazake

1. Rice Koji Amazake (米麹甘酒): This is the type we focus on here.
It is naturally sweet, non-alcoholic, and made by fermenting rice with koji.
2. Sake Lees Amazake (酒粕甘酒): Made from sake lees mixed with water and sugar.
It contains a small amount of alcohol and has a stronger flavor.

For beginners, rice koji amazake is the easiest and most approachable.

What Does Amazake Taste Like?

Amazake has a mild, naturally sweet flavor, often compared to a light rice pudding in drinkable form.

It can be enjoyed:

Warm — comforting and soothing
Cold — refreshing in warmer seasons
As an ingredient — in dressings, marinades, or baking

Its gentle sweetness comes entirely from fermentation — no sugar is added.

Amazake Benefits

In Japan, amazake is often nicknamed “drinkable IV drip” — a traditional expression referring to its nourishing qualities (not a medical claim).

Rice koji amazake contains:

Glucose — easily absorbed energy
Vitamin B group (B1, B2, B6) — supports metabolism
Amino acids — essential for body maintenance
Oligosaccharides — support beneficial gut bacteria
Enzymes (such as amylase) — help break down nutrients during fermentation

While amazake does not typically contain live probiotics, it provides prebiotic compounds that help support a healthy gut environment.

Note: Nutrient content varies depending on ingredients and preparation. This information is for general educational purposes only.

How to Make Amazake at Home

One of the best things about amazake is how simple it is to make.

Ingredients

Rice koji　　　　　　　　100g
Water　　　　　　　　　 200ml
Cooked rice (optional)　　100g

Adding cooked rice creates a thicker, creamier texture.

The Key to Success: Temperature

Keep the mixture at 55–60°C (131–140°F) for 8–10 hours.

Too hot (above ~65°C): enzymes lose activity
Too cool (below ~50°C): fermentation slows

Method 1: Thermos (Beginner-Friendly)

Mix ingredients
Heat to ~60°C
Pre-warm thermos
Pour in and seal
Leave 8–10 hours

Method 2: Yogurt Maker (Most Stable)

Set to 55–60°C and ferment for 8–10 hours.

Method 3: Oven (No Special Equipment)

You can use your oven, but temperature control varies:

Oven light may create a warm environment, but often only around 30–40°C
Always check with a thermometer
Alternatively, preheat briefly, turn off, and maintain warmth carefully

Storage

Refrigerator: 5–7 days
Freezer: up to 1 month

To slow further fermentation, you can gently heat to around 70°C to reduce enzyme activity.

How to Enjoy Amazake

Warm with ginger
Blend into smoothies
Use in salad dressings
Marinate meat or fish
Replace sugar in baking

FAQ

Is amazake alcoholic?: Rice koji amazake contains little to no alcohol.
Is it good for gut health?: It supports gut health through prebiotic compounds.
Can I make it without special tools?: Yes — a thermos works well.
How long does it last?: About 5–7 days when stored in the refrigerator, depending on temperature and hygiene conditions.

Final Thoughts

Amazake was the drink that gently changed my relationship with food and my body.

There’s something quietly beautiful about how rice and koji transform over time into something sweet and nourishing.
It’s a slow process — but one that teaches patience and trust.

If you’d like to continue exploring fermentation, you’ll find more practical guides here on Hakkology.
And if you’re interested in more personal reflections on fermentation and everyday life, I also share those on Medium.

Ready to Explore?

If this sparked your curiosity, you’re warmly welcome to continue exploring on Medium — where I share deeper insights and practical guides on fermentation and daily wellness.