シジミ しじみ shijimi
Also known asshijimi
At its best in Jan, Feb, Aug, Sep
In seasonAvailable
The classic. Gives a deep broth.
Steamed briefly with sake.
Also good in a clear broth.
The meat simmered in sweet soy.
Thick, glossy dark brown shells, tightly closed.
Purge sand in weak salt water of about 1%. Freezing is said to increase the umami compounds.
Lake Shinji in Shimane is the largest source. Both the summer doyo-shijimi and the winter kan-shijimi are considered at their best.