stand for another ten minutes, with the lid on. stir the rice vinegar through the rice. leave to cool completely.
peel and crush the avocado and stir the wasabi through. it can be quite spicy as the rest of the ingredients are quite mild in flavor.
cut the nori sheets to small square pieces.
get a small serving glass and start with a layer of nori. wet your hands a bit and put a bit of rice on the nori. with a spoon, add some of the avocado on top of the rice. on top of that you put the salmon. repeat the layers until the glass is full or the ingredients are 