Clear Coffee 'CLF CFF' offers caffeine buzz sans teeth-staining

Sick of the pastel-hued latte trend, spewing forth an array of turmeric yellow, 'smurf' blue and unicorn pink Instagram shots? Clear Coffee is here, offering a pigment-free answer to your morning caffeine fix.

Pitched at the health market, the beverage is designed to be a coffee alternative that won't stain teeth.

Launched by a Slovakian company and now available in the United Kingdom, CLF CFF (they don't need colour or vowels, apparently) is produced using coffee beans, water and caffeine extract, and looks like a clear glass bottle of water.

For their failed crowdfunding campaign, the makers of CLF CFF explained:

"Our aim is to create a new type of coffee drink which has the distinctive taste and stimulating effects of coffee but does not negatively affect the whiteness of your teeth," the campaign stated.

"It is produced by methods which have never been used before. Due to this technology a drink has been developed which is unique in taste and flavour. Making of clear coffee only requires two ingredients. High quality coffee beans and clear water. When the coffee beans are processed we always experience a loss in caffeine. We compensate it by adding high-quality natural caffeine."

Despite not cracking their funding goal, creators David and Adam Nag have launched the product, which is stocked by London's Selfridges and Whole Foods.

The drink has already had a better reception than Crystal Pepsi, a clear version of the famous cola, which debuted in the early 1990s and instantly flopped.

London cocktail bars have already caught on, serving up the most modern espresso martini to date.

CLR CFF retails for £5.99 ($10.19) for two 200ml bottles. There's no word if they plan to extend to Australia at this stage.