Kohada nigiri is a classic sushi dish that highlights the delicate texture and flavor of gizzard shad. To make kohada nigiri, you will need the following ingredients: fresh kohada fillets, sushi rice, rice vinegar, sugar, salt, and wasabi. Start by preparing the sushi rice by washing and cooking it according to the package instructions. While the rice is still hot, mix it with a mixture of rice vinegar, sugar, and salt. Let the rice cool to room temperature. Next, slice the kohada fillets into thin strips. Take a small amount of sushi rice and shape it into a rectangular mound. Place a slice of kohada on top of the rice and gently press it together. Repeat this process with the remaining ingredients. Serve the kohada nigiri with soy sauce and wasabi for dipping. The combination of the tender kohada and the vinegary rice creates a harmonious balance of flavors in this elegant sushi dish.