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Fridgeonomics: Why is it useful?

Can you tell someone's economic class by the contents of their fridge?

As part of the BBC's A Richer World season, Fridgeonomics explores how owning a refrigerator transforms our lives and what its contents say about us.

The BBC's Linda Yueh explains why "Fridgeonomics" is becoming a recognised global economic indicator.

This video first appeared on Talking Business with Linda Yueh.

For more from the BBC's A Richer World, go to www.bbc.com/richerworld - or join the discussion on Twitter using the hashtag #BBCRicherWorld.