Maguro zuke don is a delicious rice bowl dish made with fresh raw tuna soaked in a rich soy based marinade. Not only is it mouthwatering, but it's extremely simple to make and requires barely any cooking!
Place a piece of kombu in the marinade, dip the tuna pieces to coat both sides with the marinade then lay them flat in the container. Marinate in the fridge for 30 minutes.
Divide the rice into bowls and then arrange the tuna on top. Drizzle with 1/2 tbsp of leftover marinade and top with shredded perilla leaves, wasabi and an egg yolk. Enjoy!