Politics of a different flavour are apparent in a middle-class development, dreamily named South Horizons, just across the way from the public estate.

ECONOMIST: Hong Kong

For centuries a Scandinavian stronghold, the low, grassy Orkneys offer a different flavour entirely to the mainland, and are rich with historic sites that predate the Egyptian pyramids.

BBC: Exploring Scotland by road

This works by blowing a mixture of volatile chemicals (which flavour-creating compounds necessarily are) through a column of powder that absorbs and releases those chemicals at different rates.

ECONOMIST: The technology of taste: Food for thought | The