Blanch Tomatoes: Score a small “X” in the bottom of each of the 6 roma tomatoes. Drop into a pot of boiling water, removing after about 30 seconds, when skin begins to peel away. Immediately plunge tomatoes into a bowl of ice water.
Cut Tomatoes: Peel the skin from each tomato. Cut each into quarters lengthwise, then scoop out the seeds. Transfer to a lidded container.
Marinate: Stir together ¼ cup soy sauce, 2 Tbsp fresh grated ginger, 2 Tbsp toasted sesame oil, 2 Tbsp sriracha, and 1 Tbsp lime juice, then drizzle over the tomato. Toss to coat, and let marinate for at least 1 hour (overnight is ideal).
Rice: Meanwhile, prepare 2 cup uncooked sushi rice according to package instructions. Stir together ¼ cup rice vinegar, 2 Tbsp sugar, and ½ tsp salt. Right before serving, stir this into the rice.
Assemble: Prepare your desired toppings. Spoon rice into each serving bowl, topping with fillings and tomato tuna (serve either in large pieces or cut into cubes).
Video
Notes
Storage: The tomato can be stored in the fridge for up to 3 days. The other components will last up to 5 days in the fridge in an airtight container.