When it first was released, Conor McGregor’s Proper No. Twelve whiskey sold out in an instant. It is a testament to the attention to detail that was given to the MMA fighter’s whiskey, which is much more than just an attention grab. In a short period of time Proper No. Twelve has already become a staple on the Irish whiskey scene. McGregor partnered with Bushmills distillery and its former manager David Elder. Together they created a triple-distilled, ex-bourbon matured gem of a whiskey, that turned heads the world over.