Inspiration for recipes can come from many places: a surprisingly delicious lunch in a neighbourhood cafe; thumbing through a dog-eared recipe book in a charity shop; or the arrival of an item you never ordered in an online food shop. Today’s dish was born out of that latter scenario, when four packets of smoked mackerel turned up unannounced. Otherwise, it uses pantry ingredients that I tend always to have in stock, so this works well for a weeknight evening when we need something quick and easy.