Ms. McDonald, originally from Australia and now living in Frankfurt, started Blyss Chocolate because she wanted to bring back the pure flavor of the cocoa bean, without any additives or sugar.

WSJ: Stuck With 30,000 Boxes of Gourmet Chocolate

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