2 ounces genever or gin
1 ounce sweet vermouth
1/4 ounce maraschino liqueur
Dash of Angostura or orange bitters
Lemon twist for garnish

Stir or shake ingredients with ice, strain into a cocktail glass and garnish. Sub in genever for something even closer to a Manhattan (hat tip to TheGinisIN, with more good reference on the history of the drink here: http://www.foodrepublic.com/2012/10/12/martinez-cocktail-recipe