It's not a total shocker to hear that Pruno originated behind bars. In prison, desperate inmates brew this illegal wine by mixing assorted fruits with ketchup, sugar, milk, and crumbled bread and fermenting it in a toilet. Inmates found with this illegal hooch are immediately punished. Naturally, someone out there thought it would be a great idea to use this recipe to produce bottled prison wine. It comes in two flavors: Orange and Grape. We tried them both.