Kopi Luwak does indeed exist. It is coffee cherries that have been eaten by the Indonesian palm civet, gone through its digestive system and been deposited out the other end. The civet (Luwak or Musang) is these days rare in Java but still reasonably common in Sumatra- there for most REAL Kopi Luwak comes from Sumatra. The green beans are cleaned by hand once the Luwak poop is collected. The real deal can sell for over $300 a kg. One of our friends, Prof Massimo in Canada, is the world recognized expert on identifying whether Kopi Luwak is real or a fraud. This is done through colour spectrum testing of the beans. The enzymes left by the digestive process of the Luwak leave a distinctive pattern on the surface of the bean. Why is it so famous? Well... like anything the rarity of the coffee makes it unique. Whether it is more delicious or flavoursome than other Indonesian coffees is debatable!