The cake can be refrigerated for up to 4 days before serving. Return to room temperature before serving.
The bourbon in the filling is key to this cake, but a glass of good bourbon to go with it is also key. Typically, small-batch, vintage-dated bourbons command high prices, but one of the best, the Evan Williams Single Barrel, is remarkably affordable. Sip it with a splash of water or a single ice cube.