A ready-to-use Japanese black sugar syrup made with authentic Okinawan kokuto — deep, mineral-rich, and genuinely hard to find outside Japan. Pour it straight into matcha lattes, coffee, bubble tea and traditional Japanese desserts.
Rarely exported · December–April harvest only · made with 40%+ Okinawan kokuto
Okinawa Brown Sugar Syrup (Kokuto Mitsu) – Authentic Japanese Black Sugar Syrup
100+years of Osaka sugar craft
40%+Okinawan kokuto content
ISO9001 & 22000 certified
JPships direct from Japan
What is kokuto
Kokuto — Okinawa’s Black Sugar
Kokuto (黒糖) literally means “black sugar.” It is a traditional, minimally processed cane sugar made by pressing Okinawan sugarcane and slowly boiling the juice — nothing added, nothing refined away. Because it is non-centrifugal, kokuto keeps the natural minerals and the deep, molasses-like character that white sugar loses.
This product turns authentic Okinawan kokuto into a smooth, pourable syrup — a kuromitsu-style black sugar syrup — ready to stir straight into drinks and desserts, with none of the melting or straining that raw kokuto needs.
Non-centrifugal
Made the old way: pressed cane juice, boiled and concentrated — not white sugar dyed with molasses.
Mineral-rich
Naturally carries potassium, calcium, magnesium and iron from the cane and the island soil.
Ready to pour
Filtered to a clean, even syrup. No melting, no grit — just open and use.
From eight islands
Born on Okinawa’s Sugarcane Islands
True Okinawan kokuto comes from just eight remote islands, where sugarcane grows in coral-derived soil under intense sun and draws minerals from the surrounding sea.
A short harvest
Cane is harvested only from December to April. Outside that window, more simply cannot be made.
Finite by nature
Typhoons, drought and crop swings make supply genuinely limited — and raw kokuto fades in long storage.
Rarely exported
The maker sells almost entirely within Japan, so outside the country this syrup is hard to find.
From Okinawa cane to kokuto
01Cane grown in coral-derived island soil.
02Cut during the December to April harvest.
03Pressed and boiled down into kokuto on the island.
IheyaIeAguniTaramaKohamaIriomoteHaterumaYonaguni
The kokuto in this syrup includes cane from Tarama, a small island prized for the quality of its sugar.
Crafted in Osaka
Refined by a Century-Old Sugar House
From the islands the kokuto travels to Osaka — a city bound to sugar since the Edo period, when much of Japan’s sugar passed through its merchants. There, a specialist sugar house with over a hundred years of experience blends Okinawan kokuto (around 40%) with raw cane sugar from Tokunoshima in Kagoshima (around 20%) and gently cooks it into syrup.
Raw kokuto naturally carries fine grit. Here it is passed through a 500-mesh and 10-micron filter, so what reaches your cup is smooth and ready to use. Production runs under ISO 9001 and ISO 22000 food-safety certification, and the result meets the Okinawa Prefecture Kokuto Cooperative standard for genuine Okinawan brown sugar.
01HarvestCane cut Dec–Apr on the islands
02Press & boilJuice pressed and slowly reduced
03ConcentrateCooked down to rich kokuto
04BlendWith Tokunoshima raw cane sugar
05Filter500-mesh & 10-micron, twice over
06BottleSealed as a ready-to-use syrup
Taste & minerals
Deep, Rounded, Mineral Sweetness
Expect molasses and caramel, a full body, a hint of smoke and a long, clean finish — far more character than a plain sugar syrup. At Brix 70 it stays stable and pours smoothly, hot or cold.
Composition & minerals
Okinawan kokuto~40%
Tokunoshima raw cane sugar~20%
Potassium (per 100 g)535 mg
Calcium / Magnesium66 / 48 mg
Iron1.1 mg
Per 100 g, energy 279 kcal. Remainder is liquid glucose. Analyzed by the Osaka Food Hygiene Association.
Ways to use it
From Matcha Lattes to Wagashi
Matcha & hojicha lattes
Its caramel depth lifts the umami of green tea — the easiest Okinawa-style matcha latte.
Coffee & milk drinks
Drizzle into lattes, iced coffee and milk for a warm, rounded sweetness.
Brown sugar milk & boba
The classic dark-streaked “brown sugar” bubble tea look and flavor.
Wagashi & kuromitsu
Over warabi mochi, anmitsu, kinako mochi and other Japanese sweets.
Kakigōri & ice cream
A shaved-ice and dessert syrup with real character.
A savory secret
A spoonful enriches teriyaki, simmered dishes and sauces.
In an iced coffee latteBrown sugar bubble teaOver kakigōri with kinakoWith Japanese sweets
Make a kokuto latte: warm your milk, stir in 1–2 tsp of syrup, then pour over matcha or espresso and finish with a drizzle. Try it with our ceremonial-grade matcha for a true Okinawa-style matcha latte.
This Okinawa kokuto syrup is at its best with matcha made for everyday drinking and lattes.
Its caramel-like depth complements the balanced profile of our ceremonial blend matcha, lifting both hot and iced matcha lattes without overpowering the tea.
Kokuto is Okinawa’s traditional black sugar — a minimally processed, non-centrifugal cane sugar made by boiling down pressed sugarcane juice. It keeps the minerals and deep flavor that refined sugar loses.
Is this the same as kuromitsu?
It is the same idea. Kuromitsu is a syrup made from kokuto. This product is a ready-to-use kokuto syrup (kokuto mitsu) built on a high proportion of authentic Okinawan kokuto, then filtered smooth.
How is it different from ordinary brown sugar syrup?
Most “brown sugar” is white sugar with molasses added back. This syrup is built on real Okinawan kokuto, so it tastes deeper and more complex and carries natural minerals.
How do I make a kokuto matcha latte?
Warm your milk, stir in 1–2 teaspoons of syrup, then pour over prepared matcha (hot or iced) and finish with a drizzle on top. It also works in hojicha lattes, coffee and brown sugar milk.
What is the difference between the 1 kg and 200 g sizes?
Only the format. The 1 kg pouch suits cafes and heavy home users and ships from Japan; the 200 g pouch is an easy retail size. Both are the same syrup.
Why can shipping cost more than the syrup?
The 1 kg pouch is heavy and ships internationally from Japan, so postage can exceed the product cost. Many customers order several units together to make shipping more efficient.
How should I store it, and why is there sediment?
Keep it cool and out of direct sunlight, and refrigerate after opening. Natural sediment from the Okinawan brown sugar (dietary fiber and minerals) can settle — this is normal and does not affect quality.
For cafes & brands
Bulk & Wholesale
Cafes, dessert shops and product makers across Japan rely on this syrup for its consistency. We supply the 1 kg pouch by the case and larger formats on request. For volume pricing or a shipping quote, get in touch.
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