The flower8 min
From a sterile flower to a caravan good
Crocus sativus does not give you a seed crop to fall back on. People have been moving its corms, and its dried stigmas, for a very long time.
The plant is a fall-blooming crocus, and it is a sterile triploid. It sets no useful seed. Farmers lift the corms and replant the offsets. A saffron field is a library of one plant, copied by hand. A harvest can fail in a week of rain or heat with no seed crop behind it to try again next month.
The flowers open on a short run of mornings in autumn. Pickers take them while they are fresh and strip three stigmas from each bloom. Growers repeat a field figure: on the order of a hundred and fifty flowers for a gram. Treat that as a farm saying. The count moves with the size of the stigma. The point of the saying is the labor. Almost all of the price is that morning's work, and then the drying.
Drying is the second craft
Too much heat and the aroma cooks off. Too little air and the stigmas mold. What you smell as hay and honey is in part safranal, which builds as the fresh stigma dries. Two fields of the same flower taste different when the dryers are different. This is why a region on a label is a clue and a single-farm lot is a better clue.
What the record can hold
Bronze Age wall paintings on Thera show crocus gatherers. From the eastern Mediterranean the dried stigma travels through Persian cooking, through Arab trade, into medieval Iberia, and into the rice dishes of South Asia. It was light enough to carry and dear enough to be worth the risk of the road. A gram in a pouch was serious cargo.
People like to hang the spice on myths and on queens. Some of those stories are stories. The part you can cook with is more ordinary: a flower that has to be copied from a corm, picked at dawn, and dried with judgment. The modern trade is still that pouch, plus a website. Iran grows most of the world's saffron. Smaller crops in Spain, Kashmir, Greece, Morocco, and Afghanistan supply the jars that want a place name on the label.
Old medical manuscripts mention saffron. Read them as history. The benefits desk is where we talk about modern trials, and about who should leave extracts alone.