When asked to name inventions local to the area, she replied: “Controversially, I understand the Cornish pasty may have been invented in Devon.”

DJ Gordon Sparks said: “We love you, Celia. You can come again!” However, Rosewarne Manor, a restaurant in Hayle, Cornwall, tweeted: “Let’s get something straight. A Cornish pasty cannot, by definition, be made in Devon. Anyone ever heard of a Devon pasty catching on?”

Cornwall Live reported that people had called the claim “sacrilege”, saying: “This is not OK, Historic England. You will not take our pasties!”

Ms Richardson’s remark was based on a book by Dr Todd Gray, an Exeter University academic who claimed the pasty originated in Devon. He cited a document found at Plymouth and West Devon Record Office, dated 1509, which refers to a cook charging for “labour to make the pasties”. It is not until 236 years later, according to Dr Gray, that a written record appeared in Cornwall.