It’s a well-known fact that saffron is the most expensive spice in the world, with each thread being collected by hand, so there’s no use in wasting a single gram. This butter is handy for finishing pasta, basting a roasted piece of fish, or even folding it into a puree, always adding a pop of colour and a sweet yet slightly bitter flavour. Keep this compound butter in your fridge door and reach for it any time a dish needs some uplifting – it’s worth the cost.