Inside The Factory: Christmas Special | Preview (BBC One)

New presenter Paddy McGuinness gets well and truly in the festive spirit in a factory in Belgium that makes four million chocolate seashells every day.

Enjoying many taste tests, he discovers how hazelnuts are roasted with sugar to create a sweet praline filling, which is then pumped into chocolate seashell shaped moulds.

Elsewhere in the episode, Cherry is also in Belgium, at another massive chocolate factory, learning how they produce the white chocolate used in Paddy’s chocolate seashells.

And she enlists the help of mathematician Bobby Seagull to explore the art, or rather the maths, of Christmas Tree decoration. Historian, Ruth Goodman is in Belgium too, exploring how Belgian chocolate has become world-famous, and she delves into the European origins of Santa Claus.

Inside The Factory: Christmas Special airs Sunday 22nd December on BBC One.