Aperol is available at liquor stores around the world as well as at many grocery stores. Accordingly, it should be easy to find in your neck of the woods unless you'd rather buy a bottle online.
If an Aperol spritz — the Venetian cocktail made from Aperol, prosecco and soda water — is the drink of summer, then this Aperol Spritz Bundt Cake is definitely the cake of summer.