【Nigiri sushi: Shiromi】
What is Silver Salmon (Ginzake)?
Wild silver salmon, also known as coho salmon, are found throughout the northern Pacific Ocean, ranging from the Russian Far East and the Kuril Islands to as far south as California in the United States. Their distribution lies slightly south of that of chum and sockeye salmon. Although they resemble chum salmon in appearance, silver salmon are distinguished by their bright silvery skin and small black spots extending from the back to the tail. They can grow to lengths of over 70 cm. Notably, they do not migrate upstream into rivers in Hokkaido.
In Japan, silver salmon is widely referred to as ginzake. While wild coho are caught in regions like Alaska and Russia, most of the silver salmon available in Japan is farmed—primarily imported from Chile. Some farmed ones are also produced domestically. These fish are commonly used in everyday food products such as convenience store bento boxes and onigiri. More recently, some conveyor belt sushi restaurants have begun offering silver salmon nigiri.
Compared to red (sockeye) salmon or king salmon, silver salmon has a paler hue, more comparable to farmed Atlantic salmon. Its flavor is milder than that of king salmon or other strongly flavored species, making it ideal for those who prefer a less pungent fish. The semi-firm flesh contains enough fat to offer a rich, moist texture without being overpowering. It strikes a balance—flavorful enough to be satisfying, yet not too intense.
Although silver salmon is less frequently served raw as sushi or sashimi in Japan, it plays a prominent role in home cooking. It is especially popular in grilled dishes such as shioyaki (salt-grilled) or teriyaki. Its mild taste and affordability make it a staple in many households.
The fishing season for wild silver salmon generally peaks from summer to early autumn, depending on the region. However, thanks to aquaculture, farmed silver salmon is available year-round, ensuring a stable and consistent supply in the Japanese market.
【Related contents】
List of White flesh fish (Shiromi)