Which leaves the Sauternes producers praying for a change in fashion, back to a time, more than a century ago, when their wine was among the most sought-after in the world.

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"This is a terrible time for all of us and we are praying for Sian's safe return, " Mr Reape said.

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You can sell and stay out of the stock for 31 days, praying that it does not rebound in that time.

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