Once more the Savoy Cocktail Book is a great source for great drinks. The Washington Cocktail is typical for those new style cocktails created in the late 1800`s, at times when vermouth was widly used in drinks like the manhattan and the martini.
45 ml (1 1/2 oz) Dry Vermouth
25 ml (3/4 oz) Cognac
1 dash The Bitter Truth Aromatic Bitters
1 dash Sugar Syrup (1:1)
Stir with ice. Strain into a cocktail glass.