Protected local food
Lake Shinji Shijimi
宍道湖産ヤマトシジミ
Large, meaty Yamato shijimi clams from Lake Shinji, the brackish lake beside Matsue in Shimane. Essential to the local shijimi soup.
Key facts
- Registered as a protected name
- 17 November 2025
- Region
- Chugoku
- Official name in Japanese
- 宍道湖産ヤマトシジミ
- Official area (in Japanese)
- 島根県松江市及び出雲市
A brackish lake
Lake Shinji, beside Matsue in Shimane, is a brackish lake with about one tenth the salt of seawater. Rivers carry in nutrients, so plankton, the clams' food, is plentiful. It is ideal water for Yamato shijimi.
Matsue's own clam
In the Edo era, Lake Shinji shijimi were the official clams of the Matsue domain, and they were also everyday food. The lake became Japan's top shijimi catch in 1981, and households in Matsue buy more shijimi than anywhere else in Japan, top of the national ranking for 14 years running as of 2024.
How to eat it
The clams are large and meaty, rich in minerals and amino acids. Try shijimi-jiru, a clam miso soup, or a clear soup. Locals say it is good the morning after drinking.
Good to know
- Watch the sunset over Lake Shinji from Matsue, then order shijimi soup for dinner.
- Compare with Jusanko Yamato Shijimi from Aomori in the far north.
Questions travellers ask
What are shijimi?
Small clams that live in brackish water. In Japan they are mostly eaten in soup.
Where is Lake Shinji?
Beside Matsue city in Shimane Prefecture, on the Sea of Japan side of western Japan.
Where it comes from
More protected foods from the same area
Crafts from the same area
Heritage stories from the same area
- Esashi: the herring town that outshone Edo
- Fukiya: the birthplace of Japan Red
- Iwami kagura: gods and demons dance the old myths
- Iwami's volcanoes: Jomon forest and silver mountain in Oda
- Izumo: the sacred land where the sun sets
- Izumo's tatara: a thousand years of making iron
- Kitamaebune: the merchant ships that made Japan's port towns rich
- Masuda: a medieval masterpiece of Japan
- Tsuwano: walk into a book of 100 old paintings
Sources
We checked the facts on this page against these sources.