Saffron (pronounced /ˈsæfrən/) is a spice derived from the flower of the saffron crocus (Crocus sativus), a species of crocus in the Iridaceae.Saffron's aroma is often described by connoisseurs as reminiscent of metallic honey with grassy or hay-like notes, while its taste has also been noted as hay-like and sweet. Saffron also contributes a luminous yellow-orange colouring to foods.