Another drink I call an Orange-Orange Martini. Fresh squeezed or good quality not-from-concentrate orange juice added to vodka + Grand Marnier. I like an orange juice with a bit more sour than sweet to balance the sweetness of the GM. Roughly, 1.5 ounces of vodka, 1/2 to 3/4 ounce of Grand Marnier and 2 ounces of orange juice. Shake over ice and strain into a chocolate-rimmed martini glass, if that appeals. (Melt chocolate in microwave and rim glass. You can do that in advance, of course. ) Use Terry's Chocolate orange for rimming or garnish with a segment of a Terry's chocolate orange if you like.