North Castle Partners Invests in VitaCup, Partnering with First Beverage Ventures to Help the Company Rapidly Scale GREENWICH, Conn., October 10, 2018-- North Castle Partners is pleased to announce a growth investment in VitaCup, Inc., maker of first to market functionally infused coffee and tea products. North Castle Partners is a leading private equity firm focused on consumer businesses that promote healthy, active and sustainable living. First Beverage Ventures added to their previous investment alongside North Castle. The terms of the investments were not disclosed.