Jameson's Caskmates' series editions use Stout or IPA casks from Irish craft breweries for maturation. A flavored series of bottlings includes Jameson Orange flavored whiskey, the Irish coffee ...

Finally, Jameson original whiskey is aged in predominantly ex-bourbon oak casks for at least 4 years, although the ‘Black Barrel' expression uses double-charred casks, while the Caskmates series ...