Video by Framus & Warwick via YouTube
Source
This has been done as an experiment to see if a bass body that has been sitting in whiskey for one year will have a difference in tone, when finished. The body was also covered again in whiskey and set on fire for a short time to bring out a certain optical look, which you can see in this clip.
See the full production process of this instrument here: https://youtu.be/7XHVtRvFY6k