Paul Hollywood celebrates British home cooking when Michelin-starred pub grub chef Tom Kerridge shares his favourite pud with Paul - his mother's bread and butter pudding. Not to be outdone, Paul recreates his own mum's teatime treats and realises she had a better recipe for pastry than he has ever had. Historian Dr Alex Langlands joins him in overturning the theory behind the classic Sussex pond pudding and rewriting the history books.