Using vermouth or another fortified wine, along with a base liquor and flavoring liqueur, is a simple way to make a good cocktail. Jamie Boudreau calls this the “Golden Ratio.” It is: 1 1/2 oz. Base Liquor (gin, vodka, rye, tequila, etc.) 3/4 oz. Fortified Wine (sweet or dry vermouth, Lillet,…