|2 fl oz||Dewar's 12 Year Old Scotch whisky|
|1/2 fl oz||Martini Rosso sweet vermouth|
|1/4 fl oz||Triple sec liqueur (40%)|
|1/6 fl oz||Freshly squeezed lime juice|
|1 dash||Orange bitters|
A delicate, Manhattan-like combo of Scotch, sweet vermouth and triple sec.
Named after William Trotter Porter (1809–1858), an American journalist and editor who founded the Spirit of the Times, a newspaper devoted to sports.