History of saffron foods, saffron stigmas were also soaked in water to yield a golden-yellow solution that was used as a fabric dye. Some historians believe that saffron first came to China with Mongol invaders by way of Persia. Saffron is mentioned in the ancient Chinese medical text "Shennong Ben Cao Jing", believed to be from the 3rd century AD (but attributed to mythological emperor Shennong). Yet the Chinese were referring to saffron as having a Kashmiri provenance. The Chinese medical expert Wan Zhen wrote that "[t]he habitat of saffron is in Kashmir, where people grow it principally to offer it to the
Saffron (use) usual substitutes in food—turmeric and safflower, among others—yield a garishly bright yellow that could hardly be confused with that of saffron. Saffron's main colourant is the flavonoid crocin; it has been discovered in the less tediously harvested—and hence less costly—gardenia fruit. Research in China is ongoing. In Europe saffron threads were a key component of an aromatic oil known as "crocinum", which comprised such motley ingredients as alkanet, dragon's blood (for colour), and wine (again for colour). "Crocinum" was applied as a perfume to hair. Another preparation involved mixing saffron with wine to produce a viscous yellow spray; it was