The smell of yeast always reminds me of the brewery accross the road from (what used to be) Platform 23 at Central Station in Sydney.

I am a young boy standing on that platform waiting for a train with my father. I don't know where we'd been, but we were going home, and the sickly-sweet smell of yeast from the brewery is all-pervasive.

Writing that has now reminded me of the neon sign from a different brewery that could be seen from the train somewhere quite close to Central - A happy smiling face endlessly raising a tankard of beer and saying "Afore ye go..."