Look up ultrasonic aging if you want to learn more about this technology - basically when you age a spirit, compounds from the aging barrel slowly migrate into

Look up ultrasonic aging if you want to learn more about this technology - basically when you age a spirit, compounds from the aging barrel slowly migrate into it; but if you shake the whole thing at high frequency this process happens dramatically faster. It doesn't even require especially impressive equipment: you can achieve pretty good results with a low end ultrasonic jewelry cleaner.