Osushiya Nishin is a traditional Japanese delicacy made from seasoned herring and capelin roe. The herring is carefully selected and marinated in a special blend of soy sauce, sake, and other seasonings, giving it a rich and savory flavor. The capelin roe adds a pop of texture and a hint of brininess, perfectly complementing the flavor of the herring. Osushiya Nishin is a popular dish in Japanese cuisine and is often served as an appetizer or snack. It is also known for its high nutritional value, as it is a rich source of omega-3 fatty acids and other essential nutrients.