People like me, who adore the crust, would have eaten the arsenic impregnated crust - and the thrown away the dodgy looking (and tasting) turnip. That little stall on the beach at Carbis bay used to sell these pasties that had turnips inside that tasted like old newspapers. However there was alot of pepper on the turnip (newspaper) - so with a nice strong cup of tea, you didn't really mind.

It wasn't poison, or anything.