How to make:
SHAKE all ingredients with ice and fine strain into chilled glass.
Dust with freshly grated nutmeg
As the anonymous writer of the 1887 edition of the Professor's book comments, "The name of this drink is a misnomer, as coffee and bitters are not to be found among its ingredients, but it looks like coffee when it has been properly concocted."
Recipe adapted from Jerry 'The Professor' Thomas' 1887 The Bar-tender's Guide.