About Kopi Luwak

Asian Palm Civet

Kopi is the Indonesian word for coffee. Luwak is a local name of the Asian palm civet in Sumatra and Java. Palm civets are primarily frugivorous, feeding on berries and pulpy fruits such as from fig trees and palms. Civets also eat small vertebrates, insects, ripe fruits and seeds.

Early production began when beans were gathered in the wild from where a civet would defecate as a means to mark its territory. On farms, civets are either caged or allowed to roam within defined boundaries.

Coffee cherries are eaten by a civet for their fruit pulp. After spending about a day and a half in the civet’s digestive tract the beans are then defecated in clumps, having kept their shape and still covered with some of the fleshy berry’s inner layers. They are gathered, thoroughly washed, sun dried and given only a light roast so as to keep the many intertwined flavors and lack of bitterness yielded inside the civet.

History

The origin of Kopi Luwak is closely connected with the history of Coffee production in Indonesia. In early 18th century The Dutch established the cash-crop plantations in their colony in Dutch East Indies islands of Java and Sumatra, including Arabica coffee introduced from Yemen. During the era of Cultuurstelsel (1830—1870), the Dutch prohibited the native farmers and native plantation workers to pick coffee fruits for their own use. Yet the native farmers desired to have a taste of the famed coffee beverage. Soon the natives learned that certain species of musang or luwak (Asian Palm Civet) consumed these coffee fruits, yet they left the coffee seeds undigested in their droppings. The natives collect these Luwak’s dropping coffee seeds; clean, roast and grind it to make coffee beverage.The fame of aromatic civet coffee spread from locals to Dutch plantation owners and soon become their favorites, yet because of its rarity and unusual process, the civet coffee was expensive even in colonial times.

Cultivars, blends, and tastes

Kopi luwak is a name for many specific cultivars and blends of arabica, robusta, liberica, excelsa or other beans eaten by civets, hence the taste can vary greatly. Nonetheless, kopi luwak coffees have a shared aroma profile and flavor characteristics, along with their lack of bitterness.

Kopi luwak tastes unlike heavy roasted coffees, since roasting levels range only from cinnamon color to medium, with little or no caramelization of sugars within the beans as happens with heavy roasting. Moreover, kopi luwaks which have very smooth profiles are most often given a lighter roast. Iced kopi luwak brews may bring out some flavors not found in other coffees.

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 seventeenth century.

Research

luwak coffe beans

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 proteolytic enzymes which break down the beans’ proteins, yielding shorter peptides and more free amino acids. Since the flavor of coffee owes much to its proteins, there is a hypothesis that this shift in the numbers and kinds of proteins in beans after being swallowed by civets brings forth their unique flavor. The proteins are also involved in non-enzymatic Maillard browning reactions brought about later by roasting. Moreover, while inside a civet the beans begin to germinate by malting which also lowers their bitterness.

At the outset of his research Marcone doubted the safety of kopi luwak. However, he found that after the thorough washing, levels of harmful organisms were insignificant. Roasting at high temperature has been cited as making the beans safer after washing.