It takes as many as 200,000 hand-picked flowers to make a single kilogram of saffron. That is not marketing. That is why it is the most expensive spice on earth.
Saffron is the dried stigma of a crocus, Crocus sativus. Each flower gives just three thin crimson threads, and each thread is pulled out by hand during a short autumn harvest. Iran grows roughly 90% of the world's supply. The scent comes mainly from a compound called safranal, which is where saffron gets its strange, moreish smell: dry hay, a little honey, and a distinct leathery edge.
That leather is the reason perfumers love it. Saffron gives an oud or amber scent a warm, suede-like lift, spicy and slightly bitter, that makes the whole thing feel richer and more expensive. It is the quiet reason so many luxury oud fragrances smell the way they do. Maison Francis Kurkdjian's Baccarat Rouge 540 opens on it. So does Initio Oud for Greatness, where saffron sits right at the top of the blend.
Here is the part nobody advertises. Real saffron is far too costly to use in perfume in any real quantity. So the saffron you smell is almost always a safranal-based accord, rebuilt in a lab to give the same leathery warmth at a price that makes sense. The spice on your rice and the saffron in your bottle are rarely the same thing, and that is exactly how it should be.
Saffron is the lift in our warmest ouds, UK-made sprays at 35% concentration. Oud Elite (our take on Initio Oud for Greatness) opens on that saffron-and-oud pairing, and Royal Oud (our take on Dior Oud Ispahan) folds saffron into rose and agarwood. See more in the best Initio dupes in the UK.