In the animals' stomachs, enzymes in the gastric juices massage the beans, smoothing off the harsh edges that make coffee bitter and produce caffeine jitters. Humans then separate the greenish-brown beans from the rest of the dung, and once a thin outer layer is removed, they are ready for roasting....
Days before the devastating 2004 Indian Ocean tsunami struck, Marcone was in Indonesia's Sumatran rain forest, where he collected about 10 pounds of civet droppings laced with coffee beans. He now uses it as "the gold standard" to rate other kopi luwaks in his lab at the University of Guelph in Ontario.
Like a forensic scientist reading a bullet's markings, Marcone stares at kopi luwak under an electron microscope, searching for striations that tell him that a civet excreted it. His studies found that kopi luwak drinkers need to be careful to avoid being duped.
"About 42% of all the kopi luwaks that are presently on sale are either adulterated or complete fakes, unfortunately," he said.
Real kopi luwak has a top note of rich, dark chocolate, with secondary notes that are musty and earthy, the scientist said. An Indonesian coffee lover described the scent as the smell of moist earth after a rainfall, with hints of vanilla, that teases the palate for hours after the cup is empty.
Link to Los Angeles Times, Link to buy In Bad Taste (Thanks, Bob Pescovitz!)