This handout picture released by Duerr's shows the world's most expensive jar of marmalade. Duerr's has produced what it says is the world's most expensive jar of marmalade, making breakfast a pricy proposition at 76 pounds per slice of toast.[Duerr's]

London - A company has produced what it says is the world's most expensive jar of marmalade, making breakfast a pricy proposition at 76 pounds per slice of toast.

The one kilo jar costs 5,000 pounds and contains generous lashings of 62-year-old Dalmore malt whisky and Pol Roger vintage champagne, as well as edible gold leaf.

Marmalade, a kind of bitter jam made with oranges, is a staple part of the traditional full English breakfast, which also includes bacon, sausages and eggs.

It is said to have first arrived in England from Portugal in the 15th century and rapidly became a favourite with the aristocracy, many of whom believed it had aphrodisiac qualities.

Manufacturers Duerr's, who produced the one-off to mark the company's 125th anniversary, say the jar will be auctioned for charity on auctions website eBay later this year.

The marmalade is presented in a crystal glass decanter and each mouthful will cost an eye-watering 11 pounds.

Richard Duerr, sales and marketing director of Duerr's, said: "Thanks to some exclusive ingredients and a priceless one-off designer jar we believe that we have created the worlds most expensive jar of marmalade."