New use for an old product: Japanese researchers produce vanilla from cow dung

The gentle cow gives milk and its dung is used variously as fertilizer and fuel for fire. In some places, cow dung is processed into biogas to generate electricity and the remains are used as a fertilizer.

Now comes news that Japanese researchers have produced vanillin from cow dung: for more, see cooltech.iafrica.com | coolscience Vanilla extracted from cow dung. Doubtful that this would qualify as prior art.