this is a twist on a dry martini (which works well with a gin & tonic too):
the pink colour is from adding angostura bitter – which is deep brown in colour but as you only use little of it, it turns the drink pink (my camera makes it look pinkish orange …)!
mix 3 parts good quality gin (i used bombay sapphire) with 1 part dry vermouth (i used dolin) and two splashes of angostura bitter (try with one splash first, you might find it too bitter otherwise). shake well with ice and strain into a martini glass.
by bringing colour to this classic cocktail, you give it a much tarter taste – hence a great aperitif to a meal that has several courses!