A New Zealand first, Wendy's has this week launched a new gourmet burger on a black brioche bun. The first major burger chain to offer a black burger in New Zealand, the bun has been developed by local artisan breadmakers Pandoro, with the food grade activated charcoal used to colour the bun having no impact on the burger's taste.

A tongue-in-cheek campaign promoting the burger features puns around what brands are not allowed to say when it comes to using the words "all" and "black".

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