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

You take beans, grind them and use water to extract something that hopefully won't taste like Valvoline.

FORBES: Magazine Article

Law enforcement agents should be able to test the toxin found in the letters to determine its potency and purity, as well as learn what chemicals may have been used to extract it from widely available castor beans, said Murray Cohen, the founder of the Atlanta-based Frontline Foundation, which trains workers on preparedness and response to bioterrorism and epidemics.

NPR: Experts: Ricin Like That In Letters Easy To Make

Ricin can actually be made in a kitchen or make-shift setting, by boiling castor beans and using a special chemical or solvent to extract the ricin.

FORBES: Is Ricin An Effective Biological Terror Agent?