This Boulevardier variant is unique due to several elements: 1. Deeper layers of flavor – coffee and chocolate bitters add additional nuances to the classic combination of whiskey, vermouth and bitters. 2. Barrel aging – this smooths out sharp corners, adds a velvety texture and notes of wood, vanilla and spices. 3. Restless Pony – an unusual whiskey in itself, which already sets a unique profile for the cocktail.