How Belgium's chocolate postage stamps were made

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A set of special stamps that smell and taste of chocolate goes on sale in Belgium on Monday.

More than 500,000 stamps have been printed on special paper imbued with the aroma of cocoa and covered in a varnish to look and smell like chocolate.

The five limited edition stamps from the Belgian post office Bpost celebrate the country's renowned chocolatiers and feature chocolate in all its forms.

A team of fragrance and taste experts from Belgium, Germany, the Netherlands and Switzerland were involved in creating the collection.

BBC News visited the printing press as the stamps rolled off, to find out just what went into producing them.

Produced by Elisabeth Ukanah.

First broadcast when the stamps were launched in February 2013.

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