Make the sushi rice according to the instructions and then season with mirin and rice wine vinegar.
Slightly wet your hands and shape the rice into two burger buns or use two bowls as moulds to set the shape of the buns
Coat the tofu in a little cornflour to help it crisp when cooked.
Make the teriyaki sauce by combining all the ingredients in a saucepan, bring to the boil and then let the sauce reduce until it coats the back of a spoon.
Remove from the heat and then use a pastry brush to coat the sauce on the tofu.
Cook the teriyaki tofu in a saucepan for a couple of minutes each side on a medium heat and then remove from the heat.
Make the siracha mayonnaise by combining the two sauces together and slice the avocado and red cabbage finely
Layer the burger by assembling all the ingredients together and enjoy!