Various theories; see the etymology of bunny chow on Wikipedia.
bunny chow (plural bunny chows)
- (South Africa) Curry served in a hollowed-out loaf of bread, sold as a takeaway in some cafeterias.
2006, Shelley Wood Gauld, Much Bigger Than Grownups: Chronicles of a Native South African, ISBN 1411682173, page 42:
- From Indian street vendors, he regularly bought Bunny Chows — a cupful of curry in a scooped-out half loaf of fresh bread.