Students of Ethnobotany: Botanical gold

Saffran_crocus_sativus_moist

Figure 1: Saffron crocus. Photographer: Gut Gimritz (Germany) from Wikimedia Commons

This flavorful edition of Students of Ethnobotany comes from the glittering Fiona Thompson.

At between $1,000 and $10,000 USD per kilo, saffron is the most expensive spice in the world. Why is it that the stigma of this small flower is worth (one fifth) its weight in gold?

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