It would take the stamens of 15000
purple crocus flowers to make a kilo, and the product is called saffron, it can be bought in little satchets for about a euro and is used in paella, chicken dishes, fish, stews and for making cakes. It was probably introduced to Spain by the Arabs.
It would take a proffesional all day to pick the flower heads to produce couple of ounces of the stamens, which are toasted over charcoal to bring out the flavour, the harvest period is normally mid October.
Spain produces 70% of the worlds saffron. In the campo people grow enough to keep themselves supplied throughout the year.
Only a small amount is used in the cooking, 0.3 of a gram would be enough in a paella for 4 people.