90g Pouch
Kuwa Matcha Pouch
Premium Japanese mulberry green powder for lattes, smoothies, and culinary use. A versatile café and home format from whole Ichinose mulberry leaf.
Shop NowCrafted in Yamanashi, Japan · Naturally Caffeine-Free
Kuwa Matcha —
Japanese Mulberry
Green Powder
A fine-milled Japanese mulberry leaf powder — brilliantly green, naturally caffeine-free, and grown from the heritage Ichinose variety in Yamanashi, Japan since 1916. Made for premium lattes, café menus, and daily wellness rituals.
- Crafted in Japan
- Mulberry Leaf, Not Tea
- Naturally Caffeine-Free
- Beverage & Culinary Ready
Japanese Source
Why Japanese Mulberry
Is Different
Kuwanosato is located in Ichikawa Mishima Town, Yamanashi Prefecture — the birthplace of the Ichinose mulberry variety (一瀬桑), first recognized in 1916. That cultivar became so exceptional that over 90% of Japan's silkworm farmers adopted it nationwide, and it is today designated a Yamanashi Prefecture natural monument. Kuwanosato grows exclusively this heritage variety, on the same land where it was born — fields with over a century of unbroken mulberry farming history.
Japan's mulberry heritage runs deep through sericulture — the tradition of raising silkworms for silk, including the imperial custom of the Empress personally tending mulberry leaves. Kuwanosato operates from the former agricultural cooperative building where silk cocoons were once collected, a physical connection to that era. When Japan's silk industry declined post-WWII, those mulberry fields were abandoned. Kuwanosato revived them — carrying over a century of agricultural tradition forward for modern wellness.
Japanese Heritage
Mulberry is not introduced here as an exotic herb. It is introduced as a meaningful Japanese agricultural ingredient with deep roots in sericulture and wellness tradition.
Kuwanosato Expertise
Kuwanosato is active in cultivation, processing, finished product manufacturing, OEM, and wholesale supply — a vertically integrated source, not a trading company.
Brilliant Green Quality
Fine-milled whole leaf produces a vibrant green powder — matcha-class visual quality that performs in premium beverages, desserts, and culinary applications.
The Science
Why DNJ + Meal Timing
Changes the Outcome
Mulberry leaf naturally contains 1-Deoxynojirimycin (DNJ), a compound studied for its role in supporting glucose metabolism. KuwaUSA applies DNJ within a structured system: taken before or during meals, designed to support glucose response at the moment it matters most — transforming a natural ingredient into a functional metabolic tool.
DNJ (1-Deoxynojirimycin)
The key active compound in mulberry leaf. DNJ is studied for supporting healthy carbohydrate metabolism — helping moderate how the body processes sugars at the moment of eating.
Meal Timing
What you take matters — but when you take it matters more. KuwaUSA is designed for use 5–10 minutes before or during meals to align with the body's glucose response window.
Observable Difference
CGM tracking of paired identical meals — with and without Kuwa Matcha — indicates a notably different glucose response curve. Supporting data is available on request; individual results vary.
Broad-Spectrum Nutrients
Beyond DNJ, whole mulberry leaf naturally contains GABA, antioxidant flavonoids, minerals, and fiber — a full-spectrum plant ingredient, not a single-compound extract.
How It Works
A Simple Rule:
Use With Meals
No lifestyle change required. Only timing changes. Metabolism is determined at one moment — when we eat. KuwaUSA focuses on that moment.
Before or During Meals
Take KuwaUSA 5–10 minutes before meals, or during meals. Designed for carbohydrate intake — aligning the compound with the glucose response window.
Daily Pattern
2–3 uses per day, integrated into normal eating behavior. A 90-day supply builds a consistent daily rhythm of metabolic support.
A Consistent Daily Pattern
Two to three uses daily, built into your normal meal rhythm. Each use supports a more consistent metabolic response — the benefit compounds with the daily pattern, not from any single use.
96M
Adults prediabetic in the U.S. (CDC)
500M+
Affected globally (IDF / WHO)
50%+
Of dogs are overweight or obese (APOP)
Kuwa Matcha
Three Formats,
One Source
Each format is made from the same fine-milled whole-leaf Ichinose mulberry powder grown and produced in Yamanashi, Japan — for home use, café menus, gifting, or discovery.
✦ Grown & Produced in Yamanashi, Japan
✦ Heritage Ichinose Mulberry Variety
✦ Naturally Caffeine-Free · Fine-Milled Whole Leaf
✦ USPTO Patent Pending 64/020,089 & 64/030,727
40g Tin
Kuwa Matcha Tin
A compact, giftable tin for premium presentation. Same fine-milled whole-leaf powder — refined packaging for countertop display or gifting.
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1 Serving · 2g
1 Serving Stick
A single-serve stick for discovery — the ideal first introduction to Kuwa Matcha. For yourself or to share.
Request a Sample
Trust & Provenance
Exclusively Produced by
Kuwanosato, Japan
The mulberry you receive carries over a century of Japanese heritage. The Ichinose variety grown by Kuwanosato has been cultivated in Ichikawa Mishima Town, Yamanashi since 1916 — the same fields, the same mountain terroir that once supplied Japan's national silk industry. This is not a new crop. It is a recovered treasure.
Kuwanosato is the dedicated steward of that heritage. Founded in 2004, the company cultivates over 45,000 mulberry trees across 10+ hectares at 700 meters elevation with no pesticides or herbicides. A 100,000-tree new planting project with local Yamanashi authorities ensures the tradition continues for future generations.
100+
Years of Mulberry Heritage
1916
Ichinose Variety First Recognized
45,000+
Heritage Trees Cultivated
- Over a century of mulberry heritage — the Ichinose variety cultivated on this land since 1916, now a Yamanashi Prefecture natural monument
- Kuwanosato: dedicated steward since 2004 — vertically integrated from cultivation to finished product; not a trading company
- Ministry of Agriculture recognition — honored as one of Japan's Treasures by Japan's Ministry of Agriculture, Forestry and Fisheries
Recognition & Credentials
Leaf to Cup — Awarded by Japan's Ministry of Agriculture
Kuwanosato and its founder SeongMin Han have been recognized for exceptional contribution to Japanese mulberry cultivation and production. The company received the "Discover Countryside Treasure in Japan" award from Japan's Ministry of Agriculture, Forestry and Fisheries — one of the country's highest honors for agricultural excellence.
Culinary Applications
From Café Innovation to
the Next Green Trend
Many of the most successful modern ingredients did not begin in the supplement aisle. They became popular because cafés, dessert shops, and visually creative food businesses turned them into experiences. Korean cafés in Los Angeles have repeatedly played this role by driving demand for new textures, new visuals, and new green beverages. Matcha's rise in America was accelerated by café innovation, layered drinks, desserts, and social media-ready presentation.
Kuwa Matcha has a brilliant green color and fine texture that performs in the same visual and culinary applications that made matcha successful — with one key difference: it is caffeine-free, and it brings an entirely new Japanese ingredient story.
Signature Drinks
Use in lattes, iced beverages, smoothies, or seasonal specialty drinks. Caffeine-free versatility for all-day service.
Desserts & Sweets
Layer into soft serve, pastries, baked goods, or plated dessert concepts. Vibrant color and a clean, versatile flavor profile.
Modern Green Menu
Give your menu a distinct Japanese ingredient story beyond conventional matcha — naturally caffeine-free with a unique origin narrative.
Partnership
Partner With Us
Bring Japanese mulberry innovation to your brand. Kuwausa works with partners across the premium wellness and culinary space:
- Premium cafés
- Health-focused retailers
- Chefs and beverage innovators
- Supplement distributors
- OEM and private-label partners
Get in Touch
Contact
Have a question about the product, sourcing, or partnership opportunities? Send us a message and the Kuwanosato team will follow up with the right information.
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