Whittaker's has opened a pop-up shop in Wellington, inspired by the K Bar.

Whittaker's has opened a pop-up cafe in Wellington, the first physical shop for the local chocolate makers.

Cuba Street has become the temporary home of "The K Bar", created to coincide with the launch of the Porirua-based chocolate factory's new K Bar block.

The 1950s-style milk bar will sell Whittaker's chocolate, as well as K Bar-themed food and beverages such as milkshakes, truffles and cupcakes in lime, pineapple and raspberry flavours.

Cameron Burnell/Fairfax NZ K Bar girls serve Whittaker's treats at the launch of The K Bar in Wellington.

The chocolate makers collaborated with the nearby Havana Bar to come up with the recipes for the baked treats.

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Siobhan Downes Baked treats are inspired by the flavours of the new K Bar block.

Whittaker's marketing manager Holly Whittaker said it was the first time they had ever had a physical shop front.

She hoped the milk bar, complete with its retro-inspired waitresses, would "dial up the nostalgia" for those who had enjoyed K Bars since they started making them in the 1950s.

The bar, located in the former Cuba Candy World shop at 268 Cuba Street, will open to the public for 10 days from Saturday.