Is saffron the most expensive thing in the world?

Chef's answer
The most expensive spice in the world, saffron costs between ?5 and ?10 per gram at the supermarket. The spice is so dear because the harvesting process is labour intensive. It can take around 150 flowers to produce just a gram of saffron. ...
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The most expensive spice in the world, saffron costs between ?5 and ?10 per gram at the supermarket. The spice is so dear because the harvesting process is labour intensive. It can take around 150 flowers to produce just a gram of saffron. ...
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