Supandi unwrapped the parcel of banana leaves he had removed from his cloth bag to reveal two curious 5in-long brown cylinders that looked like a cross between a fir cone and a peanut energy bar.

“These are good ones,” said the proud farm labourer from Lampung province on the Indonesian island of Sumatra, who handled his cache as carefully as one would an antique crystal vase. “I should get quite a bit of money for them.”