Mr Mason, 34, said: “It’s a whole hunk of pie. I wouldn’t even want to try to count the calories in it.

“We’ve got shredded sprouts, roast carrots, parsnip, diced turkey breast, roast potatoes, stuffing balls and turkey gravy – all encased in a big, thick shortcrust pastry shell.

“It would feed a family of four in one pie, easily. It’s a self-contained Christmas dinner. You could just drop it off on Christmas day and all the leg work is done.”

To prevent his festive creation from having a soggy bottom, Mr Mason blind-baked the pastry and pre-roasted the ingredients before filling the pie.

Although the pie will not be for sale, Mr Mason is planning to trial a smaller version for the restaurant’s festive menu.