大象传媒

Michael Buerk is joined by chef Paul Ainsworth to celebrate al fresco dining, cooking food served at royal picnics and garden parties.

Paul sets up the barbecue in the grounds of a former royal palace to prepare gaelic steaks, said to be Prince Philip's signature barbecue dish.

Historian Dr Annie Gray heads to Chiswick House in south west London, the location for some of the earliest royal garden parties, and she reveals just how Queen Victoria made picnics fashionable.

And Michael unearths a recipe for an apple tart from Buckingham palace kitchen maid Mildred Nicholls's notebook, dating back to the early 1900s.