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 picrocrocin, and safranal content. Another is the "Mongra" or "Lacha" saffron of Kashmir ("Crocus sativus" 'Cashmirianus'), which is among the most difficult for consumers to obtain. Repeated droughts, blights, and crop failures in Kashmir combine with an Indian export ban, contribute to its prohibitive overseas prices. Kashmiri saffron is recognisable by its dark maroon-purple hue; it is among the world's darkest, which hints at strong flavour, aroma, and colouring effect. Almost all saffron grows in a belt from Spain in the west to Kashmir in the east. The other continents, except Antarctica, produce smaller amounts. In 2014, were produced worldwide.