The Brandy Alexander was popularized in the early 20th century…
Glassware: Irish Coffee Cup, Coffee Cup
1 oz. Kahlua
1/5 oz. Tequila
Dollop of whipped cream
Pour the Kahlua and tequila into an Irish coffee glass. Fill with hot coffee and top it off with a dollop of whipped cream. Garnish with a sprinkle of ground cinnamon or a cinnamon stick.