'Clear Coffee' promises not to stain teeth, raises questions

April 17 (UPI) -- A beverage company is offering a solution for coffee lovers afraid of staining their teeth -- "the first colorless coffee drink in the world."

Slovakian brothers Adam and David Nagy did away with the color of coffee -- as well as extraneous vowels -- for CLR CFF, which lists only water, coffee and caffeine as ingredients.

The brothers have declined to reveal how they stripped the color away from CLF CFF, which is now available in Britain and Slovenia.

"We are heavy coffee drinkers. Like many other people we struggled with the teeth stains caused by it. There was nothing on the market that would suit our needs so we decided to create our own recipe," David Nagy told The Evening Standard. "Because of the hectic lifestyle we lead we wanted to make a refreshing ready-to-drink coffee which provides the boost but is low in calories."

The brothers said their beverage is made using freshly roasted Arabica beans.

"The production method is based on physical processing and doesn't include any chemicals," Nagy said.