Kopi Luwak

Kopi luwak (Malay pronunciation: [ˈkopi ˈlu.aʔ]), or civet coffee, is one of the world's most expensive and low-production varieties of coffee. It is made from the beans of coffee berries which have been eaten by the Asian Palm Civet (Paradoxurus hermaphroditus) and other related civets, then passed through its digestive tract. A civet eats the berries for their fleshy pulp. In its stomach, proteolytic enzymes seep into the beans, making shorter peptides and more free amino acids. Passing through a civet's intestines the beans are then defecated, keeping their shape. After gathering, thorough washing, sun drying, light roasting and brewing, these beans yield an aromatic coffee with much less bitterness, widely noted as the most expensive coffee in the world with prices reaching $160 per pound.
Kopi luwak is produced mainly on the islands of Sumatra, Java, Bali and Sulawesi in the Indonesian Archipelago, and also in the Philippines (where the product is called motit coffee in the Cordillera and kape alamid in Tagalog areas) and also in East Timor (where it is called kafé-laku). Weasel coffee is a loose English translation of its name cà phê Chồn in Vietnam, where popular, chemically simulated versions are also produced.


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 plantation workers to pick coffee fruits for their own use. Yet the native farmers wanted 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 luwak 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. The major Sumatran kopi luwak production area is in Lampung, Bengkulu and Aceh especially the Gayo region, Takengon. Tagalog kape alamid (or alamid kape) 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.


Production

Kopi is the Indonesian word for coffee. Luwak is a local name of the Asian palm civet in Sumatra. 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. The capture and caging of wild civets has caused some concern within the coffee industry over witnessed accounts of animal cruelty, and there have been calls for production to become regulated to help consumers avoid contributing to unethical production methods.
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.


Research
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.


Civet coffee imitation
Research into the palm civet's digestive processes and the transformation of the beans' proteins has led to the discovery of innovative ways to imitate the taste of kopi luwak without the civet's involvement. It is a response to the decrease in civet population, caused by hunting for meat. Kopi luwak production involves a great deal of labor, whether farmed or wild-gathered. The small production quantity and the labor involved in production contribute to the coffee's high cost. The high price of kopi luwak is another factor that drives the search for a way to produce kopi luwak in large quantities, lowering the cost.
The University of Florida has developed a way to recreate how nature produces Kopi Luwak without the involvement of any animals. This technology has been licensed to a Gainesville Florida firm, Coffee Primero, which now produces and distributes that product at a price competitive with ordinary quality coffees.
The Trung Nguyên Coffee Company in Vietnam, through its work in isolating the civet's digestive enzymes, has patented its own synthetic enzyme soak, which is used in its Legendee brand simulated kopi luwak coffee.


Price and availability

Kopi luwak is the most expensive coffee in the world, selling for between US$ $100 and $600 per pound. The specialty Vietnamese weasel coffee, which is made by collecting coffee beans eaten by wild civets, is sold at $6600 per kilogram ($3000 per pound). Most customers are in Asia – especially Japan, Taiwan and South Korea. Sources vary widely as to annual worldwide production.
In November 2006 Herveys Range Heritage Tea Rooms, a small cafe in the hills outside Townsville in Queensland, Australia, put kopi luwak coffee on its menu at A$50.00 (US $35.00 PPP) a cup, selling about seven cups a week, which gained nationwide Australian and international press. In April 2008 the brasserie at Peter Jones department store in London's Sloane Square began selling a blend of kopi luwak and Blue Mountain called Caffe Raro for £50 (US $79.00) a cup. Peck in downtown Milan sells a small espresso cup for 15 euros.
As of 8 September 2011, the high-end restaurant Essence of Europe in Chengdu, Sichuan Province, China sells a two-cup serving for 498 RMB (US $80). The beans (cleaned and roasted) are certified by Indonesian export authorities and the individually sealed serving is prepared for drinking in view of the customer's table.
Coffee Primero sells their "Magic Cat" line of coffee, which is made with their exclusive process developed by the University of Florida that mimicks how nature creates Kopi Luwak without the involvement of any animals, for $15.99 per pound.

Latte Art

Latte art is an method of preparing coffee created by pouring steamed milk into a shot of espresso and resulting in a pattern or design on the surface of the resulting latte. It can also be created or embellished by simply "drawing" in the top layer of foam. Latte art is particularly difficult to create consistently, due to the demanding conditions required of both the espresso shot and milk. This, in turn, is limited by the experience of the barista and quality of the espresso machine. The pour itself, then, becomes the last challenge for the latte artist.

History 

Latte art developed independently in different countries, following the introduction of espresso and the development of microfoam, the combination of crema and microfoam allowing the pattern; it presumably was initially developed in Italy.

In the United States, latte art was developed in Seattle in the 1980s and 1990s, and particularly popularized by David Schomer. Schomer credits the development of microfoam ("velvet foam" or "milk texturing") to Jack Kelly of Uptown espresso in 1986, and by 1989 the heart pattern was established and a signature at Schomer's Espresso Vivace. The rosette pattern was then developed by Schomer in 1992, recreating the technique based on a photograph he saw from Cafe Mateki in Italy. Schomer subsequently popularized latte art in his course "Caffe Latte Art".

Physics

Latte art is a mixture of two colloids: the crema, which is an emulsion (liquid-in-liquid) of coffee oil and brewed coffee (water); and the microfoam, which is a foam (air-in-liquid) of air in milk. (Milk itself is an emulsion of butterfat in water, while coffee is a solution of coffee solids in water.) Neither of these colloids are stable - crema dissipates from espresso, while microfoam separates into drier foam and (liquid) milk - both degrading significantly on the order of minutes, and thus latte art lasts only briefly.

Technique

Latte art requires first producing espresso with crema and microfoam, and then combining these to make latte art. See microfoam: procedure for how microfoam is made; this article concentrates on the latte art once the foam is made.

Before the milk is added, the espresso shot must have a creamy brown surface, an emulsion known as crema. As the white foam from the milk rises to meet the red/brown surface of the shot, a contrast is created and the design emerges. As the milk is poured, the foam separates from the liquid and rises to the top. If the milk and espresso shot are "just right," and the pitcher is moved during the pour, the foam will rise to create a pattern on the surface. Alternatively, a pattern may be etched with a stick after the milk has been poured, rather than during the pour.

Some controversy exists within the coffee community as to whether or not there is excessive focus on latte art amongst baristas. The argument is that too much focus on the superficial appearance of a drink leads some to ignore more important issues, such as taste. This is especially relevant with new baristas.

Styles

There are two main types of latte art - free pouring (pattern created during the pour) and etching (using a tool to create a pattern after the pour). Free pouring is far more common in American cafes, and requires little additional time in preparing a drink.

• Free pouring

The two most common forms of poured latte art are a heart shape and the "rosetta" or "rosette", also known as "fern" which resembles a type of flower or fern. Of these, hearts are simpler and more common in macchiatos, while rosettes are more complex and more common in lattes.

For free pouring, the cup is either kept level or tilted in one direction. As the milk is poured straight into the cup, the foam begins to surface on one side (due to the tilt). The barista then moves the pitcher from side to side as they level the cup, or simply wiggle the spout back and forth, and finishes by making a quick strike through the previously poured pattern. This "strike" creates the stem portion of the flower design, and bends the poured zig-zag into a flower shape.

A more direct pour and less wiggling yields a heart shape, and minor variation (reduced lobes, larger stem) yields an apple shape.

More complex patterns are possible, some requiring multiple pours.

• Etching

Etched patterns range from simple geometric shapes to complicated drawings, such as crosshatched patterns, animals, and flowers, and are generally performed with a coffee stirrer of some sort. Etched latte art typically has a shorter lifespan than free poured latte art as the foam dissolves into the latte more quickly.

Variants

Latte art is made by adding microfoam to espresso. Similar patterns, though much fainter, can be achieved by adding microfoam to brewed coffee, as in a café au lait or tea. Alternatively, patterns can be etched in the crema of an espresso, without adding any milk, in order to yield espresso art.