Popular drink of the Islands, staple of the Al-Bandian diet. If made from camel's milk, is simply sour milk, since camel's milk cannot produce butter. </p> <p> It is preferred if it is made of sheep's milk, which can be made into true leben - buttermilk, the fat-free drink that remains after the butter has been removed. Camel's milk is more common. Foreigners often discover it works surprisingly well as a purgative.