To make the seasoning, place the vinegar, sugar and salt in a saucepan, bring to a boil, reduce to a simmer and stir until the ingredients are dissolved.
Place the rice in a colander and wash thoroughly under cold running water. Leave the rice to soak in a saucepan with the 550ml of water for 30 minutes.
Bring the rice to the boil and then reduce to a low simmer. Cover with a lid and cook without stirring for 10 minutes. Remove from the heat and set aside, covered, for another 10 minutes.
Place the rice in a large bowl. Pour the vinegar seasoning over the rice and mix the seasoning through the rice. Continue turning the rice for a couple of minutes. Cover with a damp cloth and leave to cool to room temperature before serving.
Cut the nori sheet into 4 portions. Place a sheet in your hand and place a small ball of vinegared rice in the centre of the nori. Add a slice of avocado and some of the crab. Sprinkle with toasted sesame seeds and add a dash of wasabi. Roll into a cone shape. Repeat to create the remaining portions.
«This recipe can be varied to include shrimps or scallops rather than crab.»
An American invention, this sushi roll combines the sunny flavours of avocado and crab.