Surprisingly these are not too boozy tasting. The Guinness in the cupcake batter enhances the flavor of the chocolate, similar to the way adding coffee would. These cupcakes have great flavor on their own. Make just the cupcake batter and top with your favorite frosting. You can pick up the flavor of the whiskey and Baileys in the chocolate filling and frosting but not in a bad way. If you are not into the boozy part of these cupcakes, substitute the Baileys with milk and don't add the whiskey. Happy St. Patty's day!