Palissy Plate

In episode three, ex-forger Shaun Greenhalgh is set the task of making a Renaissance animal plate of the type invented by the great French potter Bernard Palissy. Palissy’s plates are alive with writhing reptiles, but for Shaun, killing grass snakes in Lancashire is not an option. So how can he source some examples for his moulds? And will it mean journeying back to his dark past as a forger?