A fish and chip shop's new signature dish has been praised by Delia Smith and even sold at one of her restaurants. 

The dish, a deep-fried jam sandwich, was developed by Eric Snaith who owns and operates Eric's Fish and Chips in three east of England locations, including Holt and Thornham.

Following a visit to the Holt branch, Delia was said to be so impressed by the invention that she added it to the Yellows Bar & Grill menu at Carrow Road.

Norwich Evening News: The doughnut sandwich has been an instant hitThe doughnut sandwich has been an instant hit (Image: Eric's Fish and Chips)

Stuart Wiley, a chef at Eric's, said: "The reception has been really, really good.

READ MORE: Comedian Jack Whitehall visits award-winning Norfolk chippy

"Eric and Delia go way back and she's visited us numerous times over the years so it happened purely naturally - we're very pleased."

Norwich Evening News: Eric Snaith, chef-patron of Eric's Fish and Chips, has worked with Delia Smith to serve the sweet treat at Carrow RoadEric Snaith, chef-patron of Eric's Fish and Chips, has worked with Delia Smith to serve the sweet treat at Carrow Road (Image: Newsquest)

As well as deep-fried sandwiches, Eric's has specialised in battered Creme Eggs that became an instant hit, and earlier this year, comedian and actor Jack Whitehall was snapped at the Thornham branch where he posed for pictures with fans.

Recently, Mr Snaith expanded his growing restaurant empire to include Eric's Pizza at the Yalm Food Hall in Norwich.