Cook the rice according to the instructions on the package. Afterwards, drizzle the rice with rice vinegar and mirin.
Sushi Vrimp Stack
Cut the mango flesh into small cubes and mix in some togarashi powder. Halve the avocado, remove the pit, cut the halves lengthwise and peel off the skin. Cut the flesh into very small cubes and sprinkle with lime juice and season with salt and pepper. Cut the cucumber into very small cubes and toss through the avocado.
Place a sheet of snack nori on the plates and place the ring on it. Fill the ring 1/3 with sushi rice (about 50 g). Press this a little and divide 1/3 mango on it and put another sheet of nori (cut round) on top.
Press down the ingredients in the ring and spread the avocado/cucumber mixture on top. Press it down with a spoon and place the Vrimps on top. Now carefully remove the ring. Garnish with some black sesame seeds, and sprinkle with some 'togarashi' spice powder.