Chicken in Champagne Mustard Sauce

Many years ago, some friends of ours had a rather large New Year’s Eve party at their home. Their two precious little girls were brought down to tell everyone good night before being put to bed. After the children were back upstairs, one of their guests, who is now a rather prominent South Carolina politician, decided it would be a good idea to push all the furniture against the walls so everyone could dance—the shag, I’m sure, which is the official South Carolina state dance. A champagne t