spud juice
n.β Β«All 31,000 inmates locked up in Michiganβs 32 prisons seek an outlet of some kind. For some, the outlet is drugs smuggled from the outside or alcoholβ”spud juice”βingeniously distilled from vegetable peelings and concealed in cells.Β» ββSports in prison serves as a way to keep inmates under control” by Scott Walton Baltimore Sun (Md.) Aug. 11, 1991. (source: Double-Tongued Dictionary)