I made a futomaki 'fat sushi rolls' with cured mackerel. It's irresistible for mackerel lovers.
Since my kids don't like eating 'battera' (pressed mackerel sushi), I made nori-maki rolls with the mackerel. It's easier for the kids to handle than fish-topped sushi.
Store-bought cured mackerel (shimesaba) is fine (if the mackerel is large, cut it in half and adjust the size by slicing it evenly). Prepare the sushi rice to your liking.
Enjoy Japanese food around the world.