Saku Koi-koku
Koi-koku simmers thick cross-sections of carp with skin, bones and sometimes head or offal in miso for a deeply savory soup. Around Saku, cold-water-raised Saku carp is valued for firm...
At a glance
| Name | Saku Koi-koku (Koi-koku) |
|---|---|
| Prefecture | Nagano |
| Region | Chubu |
| Type | Cross-cut carp simmered in a rich Shinshu miso soup |
What is it?
Koi-koku simmers thick cross-sections of carp with skin, bones and sometimes head or offal in miso for a deeply savory soup. Around Saku, cold-water-raised Saku carp is valued for firm flesh, while skin and bone enrich the broth.
Saku City lists koi-koku with arai, umani and grilled carp and associates carp dishes with celebratory and year-end meals.
History and local context
One city recipe uses five carp pieces, 100 grams of miso, sake, mirin and 1.5 to 2 liters of water, simmered for 60 to 90 minutes with miso added in stages. Another inherited recipe cooks for about three hours, showing household variation.
Koi-koku exists beyond Nagano; this page focuses on the regional combination of Saku carp and Shinshu miso.
How to enjoy it
Drink the hot broth, then carefully lift the flesh from its many bones. Skin and belly are rich, while ginger or sansho can sharpen the miso aroma.
Use carp raised and sold for food, cook freshwater fish thoroughly and remove fine bones especially carefully for children and older diners.
Availability varies by maker, season, and destination.
Sources and further reading
Frequently asked questions
Where is Saku Koi-koku from?
It is associated with Nagano, in the Chubu region of Japan.
What kind of food is Saku Koi-koku?
This guide classifies it as cross-cut carp simmered in a rich shinshu miso soup. See the overview for its defining ingredients and texture.
Can I order Saku Koi-koku online?
Use the Rakuten Japan search link on this page. Confirm the maker, ingredients, storage requirements, and international shipping before ordering.
Order from Japan
Search Rakuten Japan using the original Japanese food name. Search results and product pages may be available only in Japanese.
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