Japanese rice seasoning

Mix of chopped nori, sesame seeds, caster sugar, sansho pepper and sea salt, available from Japanese and Asian food stores. To make your own, place 2 sheets of finely chopped nori, 1/3 cup sesame seeds, 3 tsp caster sugar, 1 tsp ground sansho pepper and 1 tbsp sea salt in a mortar and, using a pestle, grind to a coarse powder.