Today's À Nous Paris features an atelier of Ducasse using 50+ year old machines to roast, grind, conch, and prepare chocolates in various forms.
I hope to try it out in the next few days. Any else been there yet?
If you don't like it, it's an easy walk or bus ride to get to Genin.
Here is some info in French on the place:
On the chocolate shop's actual website, there is no info but the address.