What is Shochu? Japan's Best-Kept Drinking Secret

Sake has its global fan base. Japanese whisky has its moment. But the spirit that Japan actually drinks the most? That would be shochu — and most of the world has never heard of it.

Shochu outsold sake in Japan in 2003 and has held that lead ever since. In Kyushu, Japan's southwestern island, shochu is not a specialty or a trend — it is simply what people drink. Walk into any izakaya in Kagoshima or Miyazaki and the default question is not "beer or sake?" It is "what kind of shochu?"

Yet outside Japan, shochu remains almost entirely unknown. This guide will change that for you.

What Shochu Actually Is

Shochu is a Japanese distilled spirit, typically bottled at 25% ABV (though it can range from 20% to 45%). It is made by fermenting a base ingredient — most commonly sweet potato, barley, rice, or brown sugar — with koji mold and yeast, then distilling the fermented mash in a pot still.

If that sounds similar to how whisky or brandy is made, you are on the right track. The key difference is that shochu is almost always unaged (or lightly aged), and it retains the distinct character of its base ingredient. A sweet potato shochu tastes earthy and rich. A barley shochu tastes clean and toasty. A rice shochu tastes smooth and delicate. The base ingredient is the star, not the barrel.

The word "shochu" literally means "burned alcohol" (the character sho means burn, chu means alcohol), a reference to the distillation process.

The Main Types of Shochu

Imo shochu (sweet potato)

The king of shochu. Sweet potato shochu accounts for the largest share of honkaku shochu production, with Kagoshima Prefecture and its roughly 120 distilleries leading the way. The most commonly used sweet potato variety is Kogane Sengan, which produces the classic earthy, full-bodied imo flavor. But the range is enormous: purple sweet potatoes yield floral, perfumed shochus; Joy White produces a crisp, citrusy style; and Beni Haruka gives a softer, honeyed character.

Imo shochu is the most polarizing type — people tend to love it or struggle with it. If you are trying it for the first time, start with oyuwari (hot water dilution) or sodawari (soda), which mellow the intensity and bring out the sweetness.

Mugi shochu (barley)

The most approachable style for newcomers. Barley shochu is light, clean, and easy-going, with a gentle grain character and sometimes a hint of vanilla or caramel. Oita Prefecture dominates production, with Sanwa Shurui's "Iichiko" and Nikaido Shuzo's "Nikaido" as the two most recognizable brands. On the island of Iki in Nagasaki, barley shochu has been made for over 500 years using a traditional method of rice koji and barley in a 1:2 ratio, producing a richer, more complex style that holds GI (Geographical Indication) status.

Kome shochu (rice)

The most elegant of the shochu family. Rice shochu shares DNA with sake — both start with rice and koji — but distillation gives it a different personality: lighter, slightly drier, with a clean finish. The Kuma region in Kumamoto Prefecture is the heartland, with about 27 distilleries producing "Kuma Shochu," a GI-protected designation. Kuma shochu ranges from light and fragrant (vacuum-distilled) to deep and barrel-aged (some aged in oak, developing whisky-like complexity).

Kokuto shochu (brown sugar)

The rarest and most restricted type. Kokuto shochu can only be legally produced in the Amami Islands of Kagoshima Prefecture — a special designation granted when these islands reverted from American to Japanese control in 1953. Despite being made from brown sugar, the finished spirit contains zero residual sugar (all sugar is converted to alcohol during fermentation, then further concentrated by distillation). The result is a light, tropical-tasting spirit that often surprises people with its dryness.

Awamori

Okinawa's indigenous spirit, legally classified as shochu but culturally distinct. Made exclusively with black koji and Thai indica rice, awamori has been produced for over 600 years. When aged for three or more years, it earns the designation "kusu" (old liquor) and develops remarkable complexity. Awamori has its own GI designation as "Ryukyu." We have a dedicated awamori guide for those who want to go deeper.

How Shochu Is Made

The production process has five essential steps:

1. Koji-making (seikiku): Steamed rice (or barley) is inoculated with koji mold — typically black koji (kuro-koji) or white koji (shiro-koji). The koji converts starch to sugar over about 40 hours. This is the foundation of the entire process.
2. First fermentation (ichiji-moromi): The koji rice is combined with water and yeast in a tank. Over about a week, the yeast begins converting sugar to alcohol, creating a starter mash.
3. Second fermentation (niji-moromi): The main ingredient (sweet potato, barley, rice, etc.) is added to the starter mash. Fermentation continues for another 8-14 days. The koji continues breaking down starch while yeast continues producing alcohol.
4. Distillation (joryuu): The fermented mash is heated in a pot still. Alcohol vapor rises, is collected, and condenses back to liquid. Honkaku shochu uses a single distillation, which preserves the character of the base ingredient.
5. Aging and blending (chozo and warisuii): The raw distillate (genshu) rests in tanks, clay pots, or occasionally wooden barrels. Most shochu is aged for a few months to smooth out harsh edges. It is then diluted with water to the target ABV (usually 25%) and bottled.

Honkaku vs Korui: A Critical Distinction

Japanese law divides shochu into two categories, and the difference is enormous:

Honkaku shochu (otsurui / authentic shochu): Single-distilled in a pot still. This preserves the flavor of the base ingredient and produces a spirit with character, complexity, and regional identity. This is the shochu that enthusiasts care about. Think of it as the craft whisky of the shochu world.

Korui shochu: Multi-distilled in a column still, producing a nearly neutral spirit at high proof that is then diluted. Similar in concept to vodka. Korui shochu is cheap, flavorless by design, and primarily used as a base for chuhai (flavored cocktails) and mixed drinks. Most of the shochu sold in convenience stores and used in canned chuhai is korui.

When people say "shochu is delicious" or "shochu is boring," they are almost always talking about different categories. Honkaku shochu is a craft spirit with centuries of tradition. Korui shochu is an industrial product. This guide focuses entirely on honkaku shochu.

How to Drink Shochu

Oyuwari (hot water)

The traditional Kyushu way, especially in winter. The key technique: pour the hot water first, then add the shochu. This may seem counterintuitive, but adding shochu to hot water (rather than the reverse) creates a natural convection current that gently mixes the drink without stirring, and prevents the shochu's aromatics from being blasted away by steam. The standard ratio is 6:4 (shochu to water). Oyuwari is especially magical with imo shochu — the heat releases the sweet potato's aromatic compounds in waves.

Mizuwari (cold water)

Shochu mixed with cold water, typically in a 6:4 or 5:5 ratio. This is the most sessionable way to drink shochu — light, refreshing, and easy to drink over a long meal. Some connoisseurs prepare mizuwari the night before (maewari) and let the water and shochu marry overnight, which produces a noticeably smoother blend.

Rokku (on the rocks)

Shochu over ice. Simple, clean, and a good way to appreciate the spirit's character as it slowly dilutes. Works especially well with mugi and kome shochu.

Sodawari (soda water)

Increasingly popular, especially with younger drinkers. The carbonation lifts the aromatics and makes the drink feel lighter. Try a 1:3 ratio (shochu to soda) with kokuto or mugi shochu for a refreshing highball-style drink.

Straight (sutoreeto)

Undiluted, at room temperature. This is how connoisseurs evaluate shochu, as it reveals every detail of the spirit's character. Best reserved for high-quality honkaku shochu and aged varieties.

Shochu vs Sake: The Key Differences

For a deeper comparison, see our Sake vs Shochu guide.

Shochu Culture in Japan

Shochu's cultural center of gravity is firmly in Kyushu. Kagoshima alone has approximately 120 distilleries, and the "satsuma" sweet potato shochu tradition is as central to the prefecture's identity as bourbon is to Kentucky. In Miyazaki, Oita, and Kumamoto, shochu is the default spirit at meals, social gatherings, and celebrations.

The four GI (Geographical Indication) designations tell the story of shochu's regional diversity:

• Satsuma (2005) — Sweet potato shochu from Kagoshima (excluding Amami)
• Kuma (1995) — Rice shochu from the Kuma region of Kumamoto
• Iki (1995) — Barley shochu from Iki Island, Nagasaki
• Ryukyu (1995) — Awamori from Okinawa

Japan has approximately 970 shochu and awamori distilleries operating today. Terroir HUB covers all of them.

Frequently Asked Questions

What is shochu?

Shochu is a Japanese distilled spirit made from sweet potato, barley, rice, or brown sugar. It is Japan's most consumed spirit, with a typical ABV of 25%. Honkaku (authentic) shochu is single-distilled in a pot still, preserving the character of the base ingredient.

How is shochu different from sake?

Sake is brewed (fermented) like beer, while shochu is distilled like whisky. Sake is made from rice with 15-16% ABV. Shochu can use various ingredients and has 25% ABV, but is usually diluted before drinking.

How do you drink shochu?

On the rocks, mixed with cold water (mizuwari), mixed with hot water (oyuwari), with soda (sodawari), or straight. The most traditional way in Kyushu is oyuwari — hot water first, then shochu.

What does shochu taste like?

It depends on the base ingredient. Sweet potato shochu is earthy and rich. Barley shochu is clean and toasty. Rice shochu is smooth and delicate. Brown sugar shochu is light and tropical. Awamori is bold and complex.

Is shochu gluten-free?

Distillation removes gluten proteins, so most shochu is considered gluten-free in practice. For maximum safety, choose sweet potato, rice, or brown sugar varieties made from naturally gluten-free ingredients.

How many calories are in shochu?

About 146 calories per 100ml straight (25% ABV). A typical diluted serving of about 60ml shochu + 40ml water contains roughly 88 calories. Shochu has zero sugar, fat, and protein.