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Civet Coffee or Kopi luwak is a coffee that consists of partially digested coffee cherries, which have been eaten and defecated by the Asian palm civet (Paradoxurus hermaphroditus). It is also called civet coffee. The cherries are fermented as they pass through a civet's intestines, and after being defecated with other f***l matter, they are collected.
Producers of the coffee beans argue that the process may improve coffee through two mechanisms: selection – civets choosing to eat only certain cherries, and digestion – biological or chemical mechanisms in the animals' digestive tracts altering the composition of the coffee cherries.
Although kopi luwak is a form of processing rather than a variety of coffee, it has been called one of the most expensive coffees in the world, with retail prices reaching US$100 per kilogram for farmed beans and US$1,300 per kilogram for wild-collected beans.