Serves 4 / makes 4 sushi sandwiches Ingredients: For the rice: 400g sushi rice 500ml water 2 tsp salt 2 Tbsp sugar 160ml rice vinegar For the filling: 1 Tbsp sesame oil 4 large portabello mushrooms, thickly sliced 1 Tbsp soy sauce 8 sheets nori 1 large avocado, quartered and sliced 1 large carrot, peeled […]