Asses milk

Asses' milk is characterized by a decidedly sweet taste, and also by the fact that it is more easily digested than any other kind of milk. Its use is therefore indicated in the case of very weak persons, and feeble children can be best brought up with it when the maternal milk fails. The fact that it so closely resembles mother's milk makes it very useful for suckling children.  It is quite a remarkable fact that among all animals the ass is the one whose milk most closely resembles human milk. Already in ancient times quite a number of healing properties were ascribed to asses' milk, and Nero's consort, Popp e, when on a journey, always took along 500 asses, in order to be able to bathe in their milk.

Asses milk is, in fact, worthy of much greater attention than it receives, and should be more frequently employed. Its rather sweet taste is not agreeable to every one.

From: http://www.oldandsold.com/articles30/health-and-diet-25.shtml