Take it from the Frenchman who has made it his life's work to sample every pain au chocolat between Marseille and Melbourne, Monsieur truffe has Australia's best, (except for that brief and heavenly period when Sydney's Sonoma was employing a gifted French pastry chef). I should be embarrassed to say that we had two each but I'm not. I also had a mocha.
I waddled rather than walked out of the shop but it was entirely worth it.
Monsieur truffe, 90 Smith St, Collingwood.