Satan's Whiskers
3/4 ounce gin
3/4 ounce dry vermouth
3/4 ounce sweet vermouth
1/2 ounce orange juice
1/2 ounce Grand Marnier
1 dash orange bitters
Shake with ice. Strain into a cocktail glass.
Using "Orange CuraƧao" instead of Grand Marnier turns this into a "curled" version.