Diana P.
Yelp
This is by far my favorite fromagerie in Paris. Pascal Beillevaire sells some amazing butter, yogurts, fresh eggs, and of course cheese.
I can't get enough of their demi-sel croquant unpasteurized butter. Riddled with flecks of salt, this butter melts in your mouth or equally on a piece of toast. I have a friend who loves this butter SO much that she admits she could probably eat it by itself.
They have a large selection of cow, sheep, and goat milk cheese. Not enough can be said about unpasteurized cheeses and butter. I've sampled the comté, brie, fruit filled chevre, saint-maure, butter, and yogurts, all of which are of exceptional quality. True, it is a bit pricier than your monolithic grocery store, but as in most cases, you get what you pay for.
This small shop on Rue Saint Antoine was manned by two people when I stopped in. The woman quickly stopped what she was doing (cutting up slices from a large round of cheese), to help me. I purchased two small beurre cru demi-sel croquant and asked her to put them in a sous-vide sack (under vacuum). She returned a few minutes later to ring up my purchase. I was pleasantly surprised that she didn't charge me for vacuum packing my butter; it usually costs an extra euro.
The company has several locations around Paris. I've been to a few and the service has always been great.