METHOD
1. Prepare the Sushi Rice: Cook sushi rice according to package instructions. While the rice is still warm, season it with rice vinegar, then allow it to cool to room temperature.
2. Shape the Rice: Wet your hands with water to prevent sticking, then take a small amount of rice and shape it into an oval ball, about the size of a thumb. Repeat for the second portion.
3. Assemble the Nigiri: Place a slice of bluefin tuna over each rice ball, gently pressing down to ensure it stays in place.
4. Add the Caviar: Place a small spoonful of caviar on top of each piece of tuna.
5. Serve: Arrange the tuna nigiri on a plate with pickled ginger and a small dab of wasabi on the side. Serve with soy sauce for dipping.