Lake Biwa Koayu Simmered with Sansho
Koayu sansho-ni simmers small Lake Biwa ayu whole with soy, sugar, sake, mirin and aromatic sansho berries. The concentrated glaze balances the fish's gentle bitterness with citrusy pepper...
At a glance
| Name | Lake Biwa Koayu Simmered with Sansho (Koayu no Sansho-ni) |
|---|---|
| Prefecture | Shiga |
| Region | Kansai |
| Type | Sweet-savory whole young ayu preserve |
What is it?
Koayu sansho-ni simmers small Lake Biwa ayu whole with soy, sugar, sake, mirin and aromatic sansho berries. The concentrated glaze balances the fish's gentle bitterness with citrusy pepper.
Lake-dwelling ayu remain small and are called koayu. Their main fishing season runs from spring into summer, while simmered preserves are sold year-round.
History and local context
To keep the delicate fish intact, cooks avoid vigorous stirring, use a drop lid and may add vinegar or umeboshi. Mirin finishes the surface with gloss.
Shiga preserves several lake fish as tsukudani; koayu is distinct from a larger salt-grilled ayu because the small fish is cooked and eaten whole with concentrated seasoning.
How to enjoy it
Serve a small amount with hot rice, in a bento or with sake, and notice the whole fish, sweet-savory glaze and sansho aroma.
Check Lake Biwa origin, sansho inclusion, chilled versus shelf-stable storage and bone firmness. Lift the fish gently so it keeps its shape.
Availability varies by maker, season, and destination.
Sources and further reading
Frequently asked questions
Where is Lake Biwa Koayu Simmered with Sansho from?
It is associated with Shiga, in the Kansai region of Japan.
What kind of food is Lake Biwa Koayu Simmered with Sansho?
This guide classifies it as sweet-savory whole young ayu preserve. See the overview for its defining ingredients and texture.
Can I order Lake Biwa Koayu Simmered with Sansho online?
Use the Rakuten Japan search link on this page. Confirm the maker, ingredients, storage requirements, and international shipping before ordering.
Order from Japan
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