Show me cocktails with bourbon, Amaro Averna, demerara syrup, and bitters.

It looks like none of the cocktails in the provided list feature the exact combination of bourbon, amaro average, demerara syrup, and bitters. However, I can highlight some interesting options we have that feature bourbon paired with other intriguing ingredients and bitters, which might inspire you to find or modify a recipe fitting your desired profile.

For instance, the Almond Old Fashioned combines bourbon with Amaretto and Angostura Bitters, giving it a rich nutty twist, and could be a great inspo if you appreciate flavors like amaro. The Boulevardier, with its mix of bourbon and bitters (albeit with Campari instead of amaro), is a well-regarded cocktail for those who enjoy balanced sweet and bitter profiles. These might not fit your initial ingredient list exactly but offer related flavor complexities that bourbon lovers often appreciate. You may consider trying one of these or using them as a base for your experimentation with amaro and demerara syrup!