Ingredients: - 1 yellowtail fillet - 1/4 cup soy sauce - 2 tablespoons fresh lemon juice - 1 tablespoon rice vinegar - 1 tablespoon mirin - 1 teaspoon grated ginger - 1 green onion, thinly sliced Steps: 1. Slice the yellowtail fillet into thin sashimi slices. 2. Arrange the slices on a serving platter. 3. In a small bowl, whisk together the soy sauce, lemon juice, rice vinegar, mirin, ginger, and green onion. 4. Drizzle the ponzu sauce over the yellowtail slices. 5. Let the sashimi marinate in the sauce for a few minutes before serving. 6. Serve the hamachi sashimi with ponzu sauce as an appetizer or part of a sushi platter. Indulge in the delicate and fresh flavors of hamachi sashimi. The thinly sliced yellowtail is buttery and melts in your mouth. The tangy and citrusy ponzu sauce adds a refreshing kick to the dish. Enjoy it as an appetizer or as part of a sushi platter for a light and elegant dining experience.