Shochu vs Soju: Not the Same Drink

Two clear spirits, two green-ish bottles, two syllables ending in the same sound. Singapore drinks both, often in the same week, and a lot of people use the words interchangeably. They should not. Shochu is Japanese. Soju is Korean. And the gap between them is much wider than the gap between, say, two whiskies — because the most common versions of each are made in fundamentally different ways.

Here is the whole thing, without the marketing.

They share an ancestor, then part company

Distilling arrived on the Korean peninsula a long way ahead of Japan — conventionally dated to the thirteenth century, brought in through the Mongol campaigns, which is why the old distilling city of Andong still gives its name to a traditional style. Japan’s shochu shows up in the written record later, in the sixteenth century, and the most quoted piece of evidence is a complaint: carpenters working on a shrine in Kagoshima scratched a grumble into a plank that their employer had been too stingy to give them any shochu.

So both drinks came out of the same broad wave of distillation reaching East Asia. What happened afterwards is where they diverge, and the divergence is mostly industrial.

The real difference is what is in the bottle now

Compare the two categories most people actually encounter and the contrast is stark.

Honkaku shochu is single-distilled from one declared base ingredient — sweet potato, barley, rice, buckwheat, brown sugar — and under Japan’s liquor rules that designation does not permit added sugars or flavourings. What you taste is the raw material. Sweet potato shochu tastes emphatically of sweet potato. It is usually bottled around 25 percent, and it is designed to be diluted at the table rather than shot.

Mass-market soju, the green bottle you see stacked in every Korean restaurant fridge, is generally something else: a highly rectified, near-neutral spirit — frequently distilled from starch crops like tapioca or sweet potato rather than rice — then cut with water and sweetened. It is engineered to be smooth, cheap and easy, and it has drifted steadily downwards in strength over the years, with most standard bottles now sitting in the mid-to-high teens. That is closer to a fortified wine than to a spirit.

This is the sentence that resolves most arguments: a typical honkaku shochu and a typical green-bottle soju are not two versions of the same drink, they are two different product categories that happen to share a family tree.

But traditional soju is a different story

It would be unfair to leave it there, because the green bottle is not the whole of Korean distilling. Traditional soju — distilled from grain, unsweetened, often considerably stronger than 25 percent — is a serious drink, and it is much closer to honkaku shochu than to its own mass-market cousin. It is simply far less exported, so most people outside Korea have never had it.

If you have only ever had the green bottle and concluded soju is a bit thin, that is a fair reaction to that specific product and an unfair verdict on the category.

How each is drunk, which is not the same either

Soju’s normal service is neat and cold in small glasses, poured for each other around a table, alongside food. The pouring is the point: it is a social mechanic more than a tasting exercise, and the etiquette around who pours for whom is taken seriously.

Shochu’s normal service is diluted. Oyuwari is shochu cut with hot water, which softens it and brings out the base ingredient. Mizuwari is the same idea with cold water. And the version that took over the world is the highball: shochu (or whisky) with soda over plenty of ice, bone dry, absurdly drinkable with grilled food. We go into why that combination works so well in sake versus shochu.

Strength, honestly

• Honkaku shochu — commonly around 25 percent, meant to be lengthened with water or soda.
• Mass-market soju — commonly mid-to-high teens, meant to be drunk neat and cold.
• Traditional soju — often well above both, and treated accordingly.

The counterintuitive result is that a night on soju and a night on shochu can end up in roughly the same place, because the stronger drink is the one you keep diluting.

What we pour, and what we do not

We should be plain about this, because a guide that quietly implies otherwise is not much use to anyone. Habibi-san pours neither of these neat. There is no soju on our list at all. Shochu appears exactly once, inside a cocktail called Aomori Amazeballs — the menu’s own description is crisp Aomori apple meeting smooth shochu and light soda, which is to say a fruit-led highball, and a genuinely good first encounter with the spirit if you have never had it.

What we do keep is five sakes, a cocktail list built on Japanese ingredients, and Suntory beer. If your evening’s plan is a soju table, we are the wrong room and there are excellent Korean restaurants in this city that will do it far better than we would.

What we are good at is what happens when Japanese drinks meet a charcoal grill and a Middle Eastern kitchen. That is the whole idea of the place: our drinks menu opens by saying we are not here for white tablecloths or polite whispers. You can read the full list on our cocktails and drinks menu, and the sake selection sits on the wine and sake list.

Quick answers

Is soju just Korean shochu? No. The name is cognate and the history overlaps, but the mainstream products are made differently, taste different and are drunk differently.

Which is stronger? Honkaku shochu, usually — though you drink it diluted, so the glass in front of you may well be weaker.

Can I make a highball with soju? You can, but sweetened soju already carries sugar, so it will not be the dry, palate-clearing thing a shochu or whisky highball is.

A practical note: we serve pork and a full bar, so we are not halal — that and the other common questions are answered in our FAQ. For the wider format these drinks belong to, start with our izakaya guide, and for where else in town does it well, our honest izakaya shortlist. If it is the label wording that keeps tripping you up, how to read a sake label is the companion piece to this one.

We are at 29 Hamilton Road, Singapore 209198, Tuesday to Sunday, 5pm to 11pm. Have a look at what comes off the grill, then book a table.