0. Kokuto tastes great. But what exactly is it?
Kokuto has a different personality from plain white sugar. It is sweet, but it also has a deep, almost caramel-like flavor.
That raises the obvious question:
Is kokuto actually made from sugarcane?
Yes.
Under Japan’s food-labeling rules, kokuto, also called kuro-zato or black sugar in Japan, is made by concentrating sugarcane juice without separating out the molasses, then cooling it into a solid or powder.[1]
In very simple terms:
crush sugarcane → squeeze out the juice → boil it down → keep the molasses in.
That is why kokuto tastes much more like its raw material than highly refined white sugar does.
1. Not every dark-colored sugar is kokuto
Color alone does not make a sugar kokuto.
Japan’s Ministry of Agriculture distinguishes kokuto from processed kokuto.[2]
Kokuto comes directly from concentrated sugarcane juice. Processed kokuto can be made by combining kokuto with raw sugar, molasses, or other sugar ingredients.
This matters even more in English because the phrase “brown sugar” is broader than Japanese kokuto. In many countries, brown sugar may be refined sugar with molasses added back.
So in this article, “kokuto” means Japanese unrefined cane sugar made by retaining the molasses in concentrated sugarcane juice.
If you want the real thing in Japan, checking the ingredient label is more reliable than judging by color.
2. Is ordinary white sugar also made from sugarcane?
Often, yes. But not always.
Japan’s Ministry of Agriculture lists two major sugar crops.[3]
One is sugarcane, grown in warm climates. In Japan, it is concentrated in Okinawa and the southwestern islands of Kagoshima Prefecture.
The other is sugar beet, grown mainly in Hokkaido.
Both can produce ordinary sugar.
White sugar is not white because it comes from a white plant. It becomes white because the sugar solution is purified, crystallized, and refined.
So the simple picture is not:
kokuto = sugarcane, white sugar = something else.
White sugar can also begin with sugarcane.
3. “Production volume” can mean three completely different things
Sugar statistics are a trap if you mix categories.
There is:
- the amount of sugarcane harvested,
- the amount of cane sugar produced,
- and the amount of kokuto and other non-centrifugal sugar supplied.
Those numbers differ by orders of magnitude.
In Japan’s 2024/25 sugar year, Kagoshima and Okinawa together produced about 1.404 million tonnes of sugarcane. The resulting cane-sugar output was about 151,000 tonnes.[4]
Kokuto belongs to a much smaller category called non-centrifugal or molasses-retaining sugar.
For the 2025/26 sugar year, Japan’s Ministry of Agriculture forecast about 9,000 tonnes of domestic non-centrifugal sugar supply and 6,000 tonnes of imports.[5]
So roughly speaking:
- sugarcane crop: more than one million tonnes,
- cane sugar: hundreds of thousands of tonnes,
- kokuto-type sugar: around ten thousand tonnes.
If one page says “9,000 tonnes” and another says “1.4 million tonnes,” the statistics may both be correct. They are simply counting different things.
4. Okinawa is the main kokuto region. Kagoshima matters too, but not where many visitors expect
Domestic kokuto is produced mainly in Okinawa and the southwestern islands of Kagoshima.
An industry report published by Japan’s Agriculture & Livestock Industries Corporation in 2023 estimated that Okinawa accounted for roughly 90% of Japan’s kokuto production at that time.[6]
Kagoshima is still important, but “Kagoshima Prefecture” does not mean “downtown Kagoshima City.”
Sugarcane production in Kagoshima is concentrated on islands such as Tanegashima and the Amami group.
A Ministry of Agriculture regional report using 2022 data recorded 534,100 tonnes of sugarcane harvested in Kagoshima Prefecture. Tokunoshima represented about 32%, Tanegashima about 29%, while Kikai and Okinoerabu were each around 15%.[7]
So you can walk around Kagoshima City and think:
“Where is all the sugarcane? This looks surprisingly normal.”
That reaction is reasonable.
The big cane fields are across the sea.
5. What does a sugarcane field actually look like?
Sugarcane is a giant grass.
From a distance, a mature field can look like an unusually tall grass field or a wall of narrow green leaves. The stalks are thick and segmented, somewhat like bamboo.
When fully grown, the plants can easily reach above a person’s head.
If you are trying to identify sugarcane, look at the stalks rather than just the leaves.
The key clue is:
a thick, jointed stalk that stores the sugar.
That stalk is crushed for juice, and that juice can eventually become kokuto, raw sugar, or refined sugar.
The reason central Kagoshima does not look like this everywhere is simple: the crop is not evenly distributed across the prefecture.
6. Japan also imports kokuto-type sugar
Domestic production is not the entire market.
According to trade data summarized by the Agriculture & Livestock Industries Corporation, Japan imported 6,493 tonnes of non-centrifugal sugar in calendar year 2025.[8]
The leading suppliers were:
- China: 3,350 tonnes
- Thailand: 2,603 tonnes
- Philippines: 266 tonnes
- Bolivia: 142 tonnes
China and Thailand together supplied about 92% of the total.
So Japan’s kokuto-type market is supported by two routes:
domestic production in Okinawa and the southwestern islands of Kagoshima + imports, especially from China and Thailand.
Ordinary raw sugar used for refined white sugar is even more international. Australia and Thailand are Japan’s dominant raw-sugar suppliers in recent years.[9]
The sugar aisle looks quiet. The supply chain behind it is not.
7. “So if Kagoshima erupts, the kokuto survives?” — a terrible but useful geography check
Spend long enough looking at volcanoes and your internal logic can deteriorate fast.
“What if there is a huge eruption?” ↓ “But I like kokuto. Losing kokuto would be unacceptable.” ↓ “Wait, the cane fields are not even in Kagoshima City.” ↓ “So this is not the kokuto front line?”
As dark jokes go, the geography behind it is partly correct.
Kagoshima’s sugarcane heartland is mainly Tanegashima and the Amami islands, not central Kagoshima City. Okinawa also has a larger role in kokuto, and Japan imports some non-centrifugal sugar.
So a disaster in Kagoshima City would not automatically mean “Japan has no more kokuto.”
Obviously, that says nothing about the human cost of a disaster, damage to ports and logistics, or the wider effects of a major eruption. Those depend on the event, ash fall, wind, transport disruption, and many other factors.
The only safe conclusion is the silly one:
if the quiz is strictly about where kokuto is made, central Kagoshima City is not the main defensive line.
Please preserve the city anyway.
8. Conclusion: one piece of kokuto leads all the way to island agriculture and global trade
The original question was tiny:
“Is kokuto made from sugarcane?”
Yes.
But the full answer becomes:
- genuine kokuto is made from sugarcane juice with the molasses retained,
- processed kokuto is a different labeled category,
- white sugar can come from sugarcane or sugar beet,
- Japanese sugarcane is concentrated in Okinawa and Kagoshima’s southwestern islands,
- it is completely normal not to see endless cane fields in Kagoshima City,
- Tanegashima and the Amami islands are major Kagoshima cane areas,
- Okinawa has an especially large share of domestic kokuto,
- imported non-centrifugal sugar comes mainly from China and Thailand,
- and “Kagoshima City” is not synonymous with “the center of Japanese kokuto production.”
One snack-counter question somehow ends in island farming statistics and international trade.
Sugar is much more geographic than it looks.
And the most important fact remains beautifully simple:
kokuto really is sugarcane.
References (9)
- Consumer Affairs Agency, Food Labeling Q&A caa.go.jp
- MAFF, Types of Sugar maff.go.jp
- MAFF, How Sugar Is Made maff.go.jp
- ALIC, Sugar Price Adjustment Operations, 2024/25 alic.go.jp
- MAFF, Sugar Supply-Demand Outlook, 2025/26 maff.go.jp
- ALIC, Okinawa Kokuto Industry alic.go.jp
- Kyushu Regional Agricultural Administration Office, Kagoshima Agriculture maff.go.jp
- ALIC, Domestic Sugar Supply and Demand alic.go.jp
- ALIC, Japan’s Major Raw Sugar Suppliers alic.go.jp
