Potage Billy By

This recipe was invented for the sole purpose of pandering to American snobbishness about eating mussels with their fingers. A very good customer by the name of William Brand of Ciro’s in Deauville having invited some American friends to lunch asked the chef, Pierre Franey, to concoct a soup which included the juices of the mussels but not the mussels themselves. It was such a success it becam