This looks different from Cleveland Whiskey. Cleveland accelerates aging by use of high pressure [1]. The technique reported in the NPR article uses ultrasound

This looks different from Cleveland Whiskey. Cleveland accelerates aging by use of high pressure [1]. The technique reported in the NPR article uses ultrasound, apparently at ordinary pressure. The original journal article (pdf) is open sourced at [2]. [1] https://www.thrillist.com/drink/nation/the-pressure-aged-cleveland-whiskey-taste-test https://www.thrillist.com/drink/nation/the-pressure-aged-cle... [2] http://www.sciencedirect.com/science/article/pii/S1350417716304187 http://www.sciencedirect.com/science/article/pii/S1350417716...