There's nothing so inventive as human nature, particularly human nature cooped up in a prison. Deprived of hard drugs because of increased surveillance, inmates at Wolverhampton jail have taken to brewing hooch. But because their supply of raw materials is somewhat limited ­ Pinot Noir grapes aren't readily available when you're behind bars ­ they've swiped their favourite sandwich spread, Marmite, and have been converting it to moonshine. As Marmite is full of yeast, we can only imagine it must taste something like Guinness. {{COUNTERPOINT }}