Abalone: New Zealand's 'black gold'

It may not be as famous as an oyster, but across Asia, and especially in China, the humble abalone is a popular delicacy - with a hefty price tag to match.

Reaping the rewards from growing demand for this gourmet food is New Zealand, which happens to have one of the rarest types of the species.

As part of our ongoing series 'A Taste of Asia', the BBC's Mauricio Olmedo-Perez travels to New Zealand's southern province of Otago in search of its so-called 'Black Gold.'

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