Hello - I am from Gloucester - I though a Cornish pasty supplier right on the border with Devon was having problems with his 'appellation'. I think people generally know the difference between a Cornish pasty and an empanada, I don't really understand because I thought we were buying 'Champagne' long before we joined.
I am sure the Commonwealth can bring in a similar international 'appellation' for things from all over the Commonwealth