Saffron agents. It must, therefore, be stored away in air-tight containers to minimise contact with atmospheric oxygen. Saffron is somewhat more resistant to heat. Saffron is not all of the same quality and strength. Strength is related to several factors including the amount of style picked along with the red stigma. Age of the saffron is also a factor. More style included means the saffron is less strong gram for gram, because the colour and flavour are concentrated in the red stigmas. Saffron from Iran, Spain and Kashmir is classified into various grades according to the relative amounts of red stigma
History of saffron Buddha". Wan reflected on how saffron was used in his time: "The [saffron crocus] flower withers after a few days, and then the saffron is obtained. It is valued for its uniform yellow colour. It can be used to aromatise wine." In modern times saffron cultivation has spread to Afghanistan due to the efforts of the European Union and the United Kingdom. Together they promote saffron cultivation among impoverished and cash-strapped Afghan farmers as an ideal alternative to lucrative—and illicit—opium production. Saffron cultivation in Europe declined steeply following the fall of the Roman Empire. For several centuries thereafter, saffron cultivation