The Cornish Pasty originates from Cornwall.
It is a pastry case that contains beef, sliced potatoes, turnip or swede and onion.
It was lunch for miners, farmers and fishermen. They would be dirty from the work that they do, so they could eat the pasty and only throw away the bit that they touched. It’s said that the pasty can stay warm for 8-10 hours.
Here is a standard recipe, if you would like to make one yourself.
If not, you can buy them in the supermarkets and there are stands all over the UK that sell them.