Mars also sells Cirku, a 15-calorie packet containing cocoa extract with a fruit flavor that you mix with water.

WSJ: Heart-Healthy Chocolate: Dark and Bitter Treat

Her customers have come up with new ideas, inspired by her product, and such collaborations have resulted in additional products, including Rooibos tea with Blyss cocoa beans and bath essences with Blyss cocoa extract.

WSJ: Stuck With 30,000 Boxes of Gourmet Chocolate

Mars found heart-health benefits with a research blend of gently processed cocoa that is similar to CocoaVia but without the extract added.

WSJ: Heart-Healthy Chocolate: Dark and Bitter Treat