Saffron is the world’s most expensive spice by weight. The saffron threads are the whole stigmas from the purple-flowered crocus. Its golden colour can be imitated by cheaper spices such as safflower and turmeric. Saffron's rich and delicate flavor is unmatched. Saffron is widely used to colour and flavour dishes in a variety of cuisines, including saffron rice, biryani, paella, risottos, and bouillabaisse.