OK. I’m hoping somebody out there knows the provenance and origins of this drink. A gin martini, with equal parts of Grand Marnier, splash of vermouth (of course), and a twist of lemon. A superb drink, it’s not sweet like many of the "fancy" martinis out there, so it appeals to me when I’m in the mood for something besides a classic martini (which requires a 4-5 : 1 ratio of gin to dry French vermouth, instead of this "wave the vermouth over the glass" crap. Harrumph).
The drink in question came from numerous samplings at the Gallery Bar in the Biltmore Hotel in Los Angeles, over the last decade. It’s apparently a cocktail of some antiquity, maintained at the Biltmore less for its crowd-pleasing characteristics for but its historic significance, as I vaguely recall from discussions with the bartender. I travel to Los Angeles less than I prefer nowadays, so my opportunities to pursue the story are limited. Does anyone out there know the story of this martini variant?