Your Defence of the Dark Arts teacher has been drinking butterbeer and smoking a pipe... The essence of wizardry clings to his beard. This is no scent you will ever smell among Muggles. A smoky take on Harry Potter's Butterbeer.
For a smokier version you can also take the Grail up to 10% and drop the Cream Soda down to 5%
A non-smoky and more authentic Version 2 will be forthcoming... Wizard's Beer.