When Australian chemist Cyril Callister made a food spread out of used brewer's yeast 101 years ago, he probably didn't know he was creating such an enigmatic national icon.

<p>When Australian chemist Cyril Callister made a food spread out of used brewer's yeast 101 years ago, he probably didn't know he was creating such an enigmatic national icon.</p>

If it's happening in Perth, you'll hear about it first on 6PR Breakfast with Millsy and Karl!

<p>If it's happening in Perth, you'll hear about it first on 6PR Breakfast with Millsy and Karl!</p>

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