It is no wonder that this is the mustard of French royalty.  I haven't seen this in stores (or tasted it) for probably 20 years now (when it only cost about $7 -- I notice that if you buy six at a time, the price is less than $10 a jar -- good deal.  Gifts, anyone?).  I belonged to a "foodie" group back in the early 80's before such things were popular, and I was always "the designated bringer of the mustard" because this is the mustard I brought.  It makes all other mustards seem harsh, acrid and acidic, as well as puny and washed out in comparison.  There is simply nothing else like it.  Now, if they would please bring back the CORK!!