Most expensive food in the world

Crocus sativus

Saffron, a spice grown worldwide, is derived from the saffron crocus flower. A pound of dry saffron (0.45 kg) requires 50,000–75,000 flowers to make, meaning an entire football field of these flowers. Requiring so much resources and labor, prices for the spice go around US$500/pound to US$5,000/pound (US$1100–US$11, 000 per kilogram).