Jimmy Doherty is in Thailand asking how the blossom from a banana tree is shaking up fish and chip suppers. Matt Tebbutt visits Spain to find out how the delicate raspberry gets from fields to fridges without turning to mush, and Andi Oliver heads to an onion factory to see how the eye-watering vegetables are peeled on a gigantic scale.

More fascinating food facts from around the world, including the role of candy floss in an astonishing food revolution in the US. Plus: crayfish trapping, and brie.