I had a small amount of Kopi Luwak, which is suppose to be the most expensive in the world. Not for the taste but how hard it is to get! The beans have to be eaten by a special animal in the jungle and then expelled. I remember it being very good but glad I didn't know how it was harvested before I drank it. Oh by the way at the seminar, there was only one American brand served, Eight O'clock 100% Colombian, the rest were considered too low quality to serve.