Hummm...Very interesting...Are you getting a JBM Blend or 100% JBM? And my next question is have you contacted the roaster you purchased it from? We for example have two different estates in Jamaica where we import our beans from, and both yeild a slightly different taste, but both are excellent. I tend to agree with Chris Kay in this case, contact the roaster and ask their advise. And topher & Alun I believe their was an episode on the "X" Files regarding a bad batch. It featured this black ooze... :twisted: