The most expensive coffee “Kopi Luwak” became popular about 10 years ago, but in Indonesia, as early as 50-60 years ago, local peasants began to drink this coffee came from excrement who don’t have spare money to buy ordinary coffee. Until 10 years ago, a German discovered it and found its unique flavor on the trip of Sumatra, then it had been widely publicized. Kopi Luwak doesn’t come from ordinary cats but civets. It is also known as civet coffee. Kopi Luwak has become the world’s most expensive coffee at the price of $100 per cup, a real luxury good now.