The announcement follows three years of collaboration between Barry Callebaut and FlavaNaturals on the development of a dark chocolate bars called FlavaBars that contain five times the cocoa flavanols of a typical dark chocolate bar, Barry Callebaut said in a statement on Wednesday.

Studies have shown that chocolate with a high content of cocoa flavanols can improve the performance of the brain, according to information available on Barry Callebaut's website.

(Reporting by)