WHAT IS THE NATAMAME
(JACKBEAN)?
The “Jack and the Bean Stalk” story
was created based on the jackbean.
The jackbean shape is as a NATA
(agricultural tool shaped as a sword),
the village people in Japan call it
NATA MAME (bean). Its vines grow
to approximately 6 meters (20 ft).
The farmers in the region of
Tamba (丹波), Hyogo, Japan grow
jackbean without any chemical
pesticide. We roast the jackbeans
after carefully selecting the best
jackbeans. Its taste is well known
as "slightly sweet and aromatic,
and very easy to drink". We have
many customers from Japan and
around the world who purchase
and enjoy our jackbean tea.
Summary of Jackbean
Formal name:Canavalia gladiata
Nickname:ack bean named after“Jack and the Beanstalk”
Key element of Jackbean: Urease, canavanine, concanavalin A
Jackbean Tea Key Words: Detoxing, Caffeine-free, Organic, Hot/Cold tea, Water infused
-News-
"Treasures of Discover Farming
Mountains and Fishing Village (Mura)"

We were awarded “the best producer” of "Treasures of Discover Rural Fisher Village (Mura)"
from the Cabinet Secretariat of Japan and the Ministry of Agriculture in November 2018.
The Japanese government selected good practices which promote regional revitalization and
improve income through agriculture and fishing across the country. KOYAMAEN was
chosen not just because Tamba Natamem Cha (jackbean tea) is good, but also for its business
model, which includes planting to product process to selling end products domestically and internationally.
-PRODUCT-
-about us-
Company name |
KOYAMAEN Co., Ltd. |
Industry |
Farming, Processing Food and Selling |
Product |
Jackbean Tea, Jackbean Supplement, Tooth gel, Dog treat |
Established company |
2001 |
Farming since |
1810 (10th generations of farming house) |
Address |
1972 Kuroi Kasuga-cho Tamba-city, Hyogo, Japan 669-4141

Tamba area is located next to Kyoto and north of Kobe.
It is 2 hours away from Osaka by train/car. |
Client Channels |
food retailers, organic shops, restaurants, hotels, beauty salons, spa,etc. |
Domestic clients in Japan |
Daimaru Department store, Sogo Department Store, Hankyu Department store, Sheraton Hotel,Westin Hotel, Royal Hotel, Kinokuniya Supermarket, Ikari Supermarket, Seijyo Ishii Supermarket, etc. |
Overseas clients |
[Hong Kong] CitySuper, NINE SEAS, GOODIES, UMAIYA
[Vietnam ] US.MART, Organica, AEON MALL, Gensai
[Taiwan] 南聯國際貿易股份有限公司
[USA] NIJIYA Market
[France] Salon du Fromage HISADA |
18 years of trust and actual best performance
Over 3,000 happy and nice letters from customers