 Materials acquired from animals, such as honey, royal jelly, milk and "ayam kampung" eggs are also often used.Jamu can be found throughout Indonesia, however it is most prevalent in Java, where "Mbok Jamu", the traditional "kain kebaya"-wearing young to middle-aged Javanese woman carrying bamboo basket, filled with bottles of jamu on her back, travelling villages and towns alleys, offering her fares of traditional herbal medicine, can be found.In many large cities jamu herbal medicine is sold on the street by hawkers carry a refreshing drink, usually bitter but sweetened with honey or palm sugar.