Don't be put off by the space's boutique ambiance and the fact that there's no self-service, the staff are generally very friendly and they can be very generous with samples (the regulars don't even start deliberating until they've tasted four or five cheeses, so don't be embarrassed to ask). The best thing about Yannick is that they're expert in offering cheeses right at the height of perfection. By all means, don't miss their lait cru Vacherins during the short (but sweet) season.
Specialists in French and Québécois cheeses, with some Spanish, Dutch, and Italian cheeses thrown in for good measure.
Pricey, but highly recommended.