Kopi Luwak would, additionally, eliminate any remaining bacteria. Sumatra is the world's largest regional producer of kopi luwak. Sumatran civet coffee beans are mostly an early arabica variety cultivated in the Indonesian archipelago since the 17th century. The major Sumatran kopi luwak production area is in Lampung, Bengkulu and Aceh especially the Gayo region, Takengon. Tagalog kape alamid comes from civets fed on a mixture of coffee beans and is sold in the Batangas region along with gift shops near airports in the Philippines. Vietnam has two farms with 300 wild civets in Dak Lak, while in Mindanao island of the Philippines,
Kopi Luwak has two farms with 200 (in Davao City) and 100 (Iligan City) wild civets. But the archipelago of Indonesia where the famous "kopi luwak" was first discovered and produced is leading in supplying the world market for almost three centuries, where many small-scale civet farms are proliferating in the countryside. Several studies have examined the process in which the animal's stomach acids and enzymes digest the beans' covering and ferment the beans. Research by food scientist Massimo Marcone at the University of Guelph in Ontario, Canada showed that the civet's endogenous digestive secretions seep into the beans. These secretions carry