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Shredded Kelp 2-Year Dashi Ma-Konbu 5.8 oz / 165g


Konbu (or kombu), a tall, dark green plant which grows in shallow to medium deep cold seawater, is an indispensable staple in the preparation of Japanese foods. This particular konbu has been aged for two years and is shredded to offer a faster way to prepare dashi stock. It allows a greater surface area to volume exposure, ensuring that the maximum umami is released into the stock. This is now a popular item for professional chefs in the Kanto (Tokyo- Yokohama) region. If you live in a region with hard water, then using cut dashi konbu is the best way to get the maximum flavor.

Konbu is not only rich in minerals, vitamins, iodine and fibers, but is also a concentrated source of natural glutamic acid (or glutamates). When combined with the inosinic acid in foods like katsuobushi (dried bonito), it enhances the umami. Umami-rich foods can be found in other parts of the world (like Parmigiano Reggiano cheese in Italy), and is an essential component in any cuisine. Today, chefs all over the world have learned to use and embrace konbu, to enhance the flavors of their food (and minimize the use of salt).

Most of the kelp consumed in Japan comes from the cold, clean waters off Hokkaido, the northern island. Among the many species, Ma-konbu (or true bull kelp) is known as the king of kelp because of its fragrant bouquet and its ability to produce crystal clear, mellow, sweet, rich and refined dashi stock. Two year old ma-konbu is harvested annually during a short period from mid-July through mid-August. After the early morning harvest hundreds of moist kelp leaves are spread out on pebbles on the beach and dried naturally in the sun. Before the sun goes down the partially dried kelp is brought inside the factory barn, stacked up and left for overnight storage. Next morning the kelp is again laid over the pebbles for further drying. This process is repeated for several more days.

Then the hard and dried kelp is left outside after sunset to absorb nighttime moisture, making the kelp flexible, allowing it to be stretched and tightly rolled for storage. The stretched kelp is then trimmed by hand to remove the wavy edge, sorted by size and quality and finally it is dried further in the barn. At the end of the process kelp weighs only about 9% of its original material.During the drying process as internal water evaporates, fine white powder seeps out from the interior and covers the surface. This powder is the source of fragrant sweetness and umami.

Matsumaeya was established in Osaka in 1912 and since then they have been providing quality konbu products to the culinary hubs all over Japan.


Manufacturer: Matsumaeya/松前屋
Ingredients: 2 year Ma-konbu (true bull kelp)
165g/5.8 oz
Origin: 南茅部, Hokkaido in Japan
Shelf Life: 9 months

Product Disclaimer

We import food products from Japan via sea, so the shelf life will be shorter than it is in the Japanese markets. The expiration date usually will be around 3-9 months. Food products cannot be returned unless the expiration date is within 1 month when the item is delivered. If any food items in your order do not meet your expectations please contact us within 30 days. You can reach to us at info@mtckitchen.com or (201) 806-1827.

Return Policy
If you are not satisfied with items

MTC Kitchen accepts returns of any new and unused item in its original condition for a full refund or an exchange within 30 days of customer receipt. We reserve the right to refuse used or broken items. Please keep the packing slip and include it with the return packages. Without proof of purchase, we are unable to accept any items for return or exchange.
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We do not reimburse shipping charges on returns.

Returning Knives which had delivered free of shipping fee

Knives returned will have the shipping cost deducted from the refund total. The return shipment fee depends on your location and the quantity of knives that you're returning. If you would like to know the shipping fee, and estimated refund total, please contact us at info@mtckitchen.com

If you receive damaged, defective or incorrect items

If we made an error on your order or you received damaged, defective merchandise, please notify customer service within 48 hours of receipt of shipment.
For items damaged in transit, please send pictures of damaged items and keep the entirety of original items, all packaging and packing materials for future inspection by carrier.
We will replace the items or refund the full amount of the purchase price including the cost of shipping.

Refund Process

Upon receipt of your return or exchange, we will process your request within 3 business days. For returns, please allow up to 2 billing cycles for the refund to appear on your statement. If you would like to expedite the exchange process, please return your original item and place a new order for the item you want.

Customer Service

If you have any questions contact us at 201.806.1897 or info@mtckitchen.com
Monday through Friday 8:00am - 5:00pm EST

For Domestic Orders

Every effort will be made to ship your online orders within two business days of purchase. But please understand that we cannot guarantee the delivery date and all orders are subject to product availability. Please contact us for any time-sensitive orders.

  • For standard and ground shipments, orders placed Monday through Friday for in-stock items, will be processed within 3 *business days.
  • For expedited shipments, orders placed Monday through Friday by 11:00 am EST (excluding holidays) for in-stock items, will be processed within the same day unless items are our of stock. Orders placed after 11:00 am EST, Saturdays, Sundays or holidays for in-stock items, will be processed within the next or following business day
  • *Business Days are Monday through Friday, excluding holidays. We are unable to ship or process orders on Saturdays, Sundays or the following holidays: New Year’s Day (the 2nd is a "Limited Service Day for UPS), Presidents' Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Holiday, Day after Thanksgiving Day, Christmas Eve, Christmas Day (the 26th is a "Limited Service Day for UPS) and New Year's Eve. If you have any concerns regarding when your order will arrive, please contact us at 201-806-1827.

We use UPS by ground service as our primary shipper.

At the time of your purchase, you may choose an expedited UPS shipping method such as Next Day Air or 3 Day Select. In stock orders requesting expedited shipping will be shipped on the same business day if received by 11:00 a.m. Eastern Standard Time.

We may need to contact you to verify your order and shipping information. Please consider that even expedited shipping services may require additional time to complete the verification process.

We sometimes use UPS SurePost® for small packages to be delivered to residential addresses or PO addresses. This service combines the consistency and reliability of the UPS Ground network with final delivery typically provided by the U.S. Postal Service.

Unfortunately we do not ship to P.O. Boxes with UPS Ground and UPS Expedited shipments as UPS does not deliver to P.O. Boxes.


Please note that if your order's total weight is over 150lbs it will be shipped and priced as a non-palletized shipment using "UPS Ground with Freight Pricing." This shipping service will be applied for deliveries within the contiguous 48 states and does not follow UPS's guaranteed delivery service policy. The lead days for packaging will be 2-4 days. If you need further information for large orders, please contact us at info@mtckitchen.com or 201-806-1827.

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