|1 1/2 fl oz||Old Tom gin|
|1 1/2 fl oz||Martini Rosso sweet vermouth|
|1/6 fl oz||Crème Yvette liqueur|
|1 dash||Orange Bitters by Angostura|
Difford's Guide remains free-to-use thanks to the support of the brands in green above.
One of those drinks where the bitter oils from the orange zest twist are crucial to its fine balance.
Adapted from Albert Stevens Crockett's 1931 Old Waldorf Bar Days which explains, "The name of an American yacht which took care of one of Sir Thomas Lipton's early but seemingly endless Shamrocks". [Shamrock being the name of Sir Thomas Lipton's fleet of America's Cup racing yachts.]