Leo Robitschek (center) of NoMad Bar in New York City pours vintage spirits neat and in cocktails such as a $198 Vieux CarrĂ© made with L’Artisan No. 50.

Leo Robitschek (center) of NoMad Bar in New York City pours vintage spirits neat and in cocktails such as a $198 Vieux CarrĂ© made with L’Artisan No. 50.