Kohada Sushi
Dotted gizzard shad

kohada sushi

What is Kohada コハダ 【小鰭】?

In Japanese, Kohada stands for a medium-sized dotted gizzard shad (konoshiro, コノシロ) which belongs to the herring family. Kohada is considered a classic ingredient of edomae sushi and is especially popular in East Asia.

A fish that changes its name

Kohada belongs in Japan to the “rising or ascending fishes” (shusseuo), this refers to fishes that change their name depending on size and age. A dotted gizzard shad carries the name Sshinko up to about 5 cm total length, from a size of 7 to 10 cm it is called kohada. As soon as it reaches 13 cm, it carries the name nakazumi, in order to then be called konoshiro as adult fish from a length of 15 cm. For the preparation of a nigiri sushi, depending on the size of the fish, either whole or multiple specimens of the size shinko are used.

Illustration showing the name of the spotted Pacific herring (shinko, kohada, nakazumi, konoshiro) depending on the size.
The Japanese name of the dotted gizzard shad (kohada) depends on its size.

If you look at the growth in value of the konoshiro, you can almost mockingly claim that it is a “descending fish”, because with increasing size its value and thus its selling price decreases. Especially for the preparation of sushi, smaller sizes like kohada or shinko are appreciated.

Kohada for Sushi and Sashimi

Kohada is not only a popular ingredient for the preparation of sushi or sashimi, it is also a symbol for the philosophy of Edomae sushi among connoisseurs and chefs alike. Because of its fresh, shiny appearance (hikari-mono), it is considered one of the most beautiful sushi dishes, which reaches its peak in flavor only when properly prepared and combined with sushi rice.

Kohada is the cheapest fish among all sushi neta (sushi ingredients, typically fish), but if you prep it well, it turns into the “Yokozuna of Nigiri”. Jiro Ono in Sushi Chef: Sukiyabashi Jiro (Satomi, 2016)

When the meat of kohada is salted and marinated in vinegar (sujime-method), an exceptionally full-bodied taste is created, which harmonizes wonderfully with the subtle sweetness of sushi rice. In addition, the marinating process reduces the strong taste and softens any bones that may still be present. The duration of application and dosage of salt and vinegar are adjusted according to the size of the fish, the amount of fat and the season, so that a lot of experience in preparation is required. Hardly any other fish can vary so much in taste by treatment with salt and vinegar, so it is said that kohada is a measure of the chef's skill or the quality of a sushi restaurant. Depending on the size of the fish, either the whole fish can be used or up to four whole specimens of the size shinko.

The taste of kohada sushi is characterized by mineral aromas accompanied by a buttery sweetness and subtle acidity. The range of possible side dishes or garnishes is wide and ranges from crystallized egg yolk (kimi-oboro) or shrimp paste (oboro) over citrus fruit (yuzu) to a refined soy-mirin sauce (nikiri). Besides its wonderful taste, the meat is rich in proteins, essential fatty acids and trace elements.

Best Season

The spawning season begins in early spring and ends in early summer, with some fish spawning twice or more (Takita, 1978). The season for small fish named shinko starts in July and ends in August. Medium sized specimens with the name kohada are mostly caught between August and September. Large specimens of the konoshiro are caught all year round, but are most palatable in the winter period from November to February.

Characteristics & Ecology

The distribution area extends along the coast of the Japanese archipelago over the Korean peninsula to the East China Sea. The dotted gizzard shad is only slightly migratory and does not change its habitat significantly during its life cycle. Its diet consists mainly of plankton, diatoms and small crustaceans.

Economy

Graph that shows the development of the production or catch of konoshiro (Konosirus punctatus).

Konoshiro is only of minor economic importance. According to the Food and Agriculture Organization of the United Nations (FAO), Japan is the only country that fishes Konoshiro in industrially relevant quantities. Since 2005, South Korea has been producing Konoshiro from aquaculture.

  1. Yokozuna (横綱) is the highest rank of a Sumō-ringer. The achievement of such a rank is associated with much prestige and reputation in Japan.
  2. Ni-kiri shōyu (煮切り醤油), or simply nikiri, is a sauce that is often applied as a thin glaze to the fish before it is served as nigiri sushi.
  3. Large specimens (konoshiro) are rarely used for the preparation of sushi or sashimi, but are suitable for other types of preparation.

Video

© Ginza Watari. How to Make Gizzard Shad (Kohada) Nigiri【English subtitles】. 2020-03-03, youTube.com

Gallery

 

For copyright and author information, see the "Image Credits" section.

Native Range

Source: Kaschner, K., K. Kesner-Reyes, C. Garilao, J. Segschneider, J. Rius-Barile, T. Rees, and R. Froese. 2019. AquaMaps, Scarponi, P., G. Coro, and P. Pagano. A collection of Aquamaps native layers in NetCDF format.

References & further reading

  • [FAO FishstatJ, 2020]: Fisheries and Aquaculture Department. Fishery and Aquaculture Statistics. Global production by production source 1950-2018 (FishstatJ). Food and Agriculture Organization of the United Nations (FAO), Rome. 2020. Retrieved online on: December 24, 2020
  • [Satomi, 2016]: Shinzo Satomi. Sukiyabashi Jiro. Vertical Inc., New York. 2016
  • [Takita, 1978]: Toru Takita. Reproductive Ecology of a Shad, Konosirus punctatus in Ariake Sound―I Distribution, Body Condition, and Maturation (有明海産コノシロの増殖生態-1 : 分布と産卵群の魚体特性). Nagasaki University Faculty of Fisheries Research Report (長崎大学水産学部研究報告) Vol. 45. Faculty of Fisheries, Nagasaki University (長崎大学水産学部). 1978

Image credits

Information

Illustration

Drawn illustration for  kohada

Common names

konoshiro gizzard shad, gizzard shad, spotted sardine, dotted gizzard shad

Japanese names

  • konoshiro (コノシロ)

Scientific name

Konosirus punctatus

Family

Herrings

About

Sushipedia (Sushi-pedia.com, sushipedia.jp) is the most comprehensive encyclopedia and source of information about sushi and sashimi. Whether you're a connoisseur or novice, there's always more to learn. Our comprehensive archive contains traditional, contemporary and innovative ingredients for the preparation of sushi.


Copyright © 2014-2021 & All rights reserved by Arconia UG (hb)