At Camborne Science and International Academy, students recently learned the art of crimping – the defining skill behind the pasty’s distinctive edge.

Grace Lobb, from the Cornish Pasty Association, said: “Pasties are tied up with our culture and heritage – it is part of who we are.

“I think it is essential all kids learn to cook but especially a pasty.”

Leia, 14, said her first time crimping a pasty had turned out “not that bad”.

The Cornish Pasty Association says an authentic example, external should have a distinctive “D” shape and be crimped, or folded into a rope-like pattern, on one side – never on top.

The rules also state that the filling needs to be “chunky”, made up of “mince or chunks of beef with swede, potato and onion and a light seasoning”.

The pasty itself should be made up of at least 12.5% meat. No artificial flavourings or additives can be used and all ingredients must go into the pasty raw.