Nduja, pronouced (‘ndu:ja) is one of the greatest Italian food discoveries since mozzarella. Made in Calabria, the toe of Italy's boot, this is a salami that is soft enough to spread. It's made from cured pork shoulder plus spectacular quantities of hot chilli peppers. It's palette-invading flavour is truly addictive, spoon it in to pasta dishes, it's an amazing 10 minute marinade for prawns and fish before grilling, or dollop it onto your pizzas. This is a store cupboard essential when you just need a little inspiration.