Asian palm civet digestive juices enter into the beans and modify the micro-structural properties of these beans. Proteolytic enzymes cause substantial breakdown of storage proteins. Kopi Luwak is traditionally made from the faeces of wild civets, however, due to it becoming a trendy drink, civets are being increasingly captured from the wild and fed coffee beans to mass-produce this blend. Many of these civets are housed in battery cage systems which have been criticised on animal welfare grounds. The impact of the demand for this fashionable coffee on wild palm civet populations is yet unknown but may constitute a significant threat. In Indonesia,
Kopi tiam is lighter in colour than normal coffee beans that uses sugar – hence the name 'white coffee'. Kopitiams in Indonesia are very similar to those in Malaysia or Singapore. Originally run by local Chinese people, they can be found in many residential areas. Old-fashioned kopitiams are usually located at shop houses, and often have a quite run-down appearance. The term kedai kopi or warkop (which stands for warung kopi) is more often used. More recently, modern kopitiams have emerged, and can be found in many shopping malls, particularly in big cities such as Jakarta, Medan, Batam and Surabaya. These attract