Kopi luwak or civet coffee, is coffee made from the beans of coffee berries which have been eaten by Civets,which is a is a cat-sized mammal in South-east Asia then passed through its digestive tract.
In its stomach, enzymes get into the beans, making shorter peptides and more free amino acids. Passing through a civet's intestines the beans are then defecated in clumps, having kept their shape and still covered with some of the fleshy berry's inner layers After gathering, thorough washing, sun drying, light roasting and brewing, these beans yield an aromatic coffee with much less bitterness, and making it the most expensive coffee in the world.
Kopi luwak is produced mainly on the islands of Sumatra, Java, Bali in the Indonesian Archipelago. Kopi is the Indonesian word for coffee. Luwak is a local name of the Asian palm civet in Sumatra. Palm civets primarily feed on berries and fruits. When coffee plants are put into civet habitats, the civets forage on only the ripest and sweetest berries. Hence, farmers would often find their best coffee berries missing in the morning after civets had been feeding and they were seen as pests.
Meanwhile farmers hoping to save their crop gathered the civet droppings and found these beans, which were darkened and more brittle, yielded a coffee with unusual taste and lack of bitterness.
After thorough washing, levels of harmful organisms are insignificant. Roasting at high temperature has been cited as making the beans further safe after washing. Kopi luwak is the most expensive coffee in the world, selling for between US $100 and $600 per pound.It can sell for as much as 100 $ per cup!