Britain's Royal Society of Chemistry have unveiled the mid-Victorian sandwich as the country's cheapest lunchtime meal, BBC News reports.
So sure that it is the most affordable lunchtime meal, the society have offered £200 (NZD$411) to anyone who can find acheaper alternative.
The sandwich, taken from the Mrs Beeton's Book of Household Management, which was a best seller 150 years ago, reportedly costs only 7.5 pence (15.5 cents).
"You simply put a piece of dry toast between two slices of bread and butter, with salt and pepper to taste. I've tried it and it's surprisingly nice to eat and quite filling", the society's Dr John Emsley told the BBC.
"I would emphasise that toast sandwiches are also good at saving you calories as well as money, provided you only have one toast sandwich for lunch and nothing else."
The sandwich has 330 calories, although margarine could be used instead of butter for the even more health conscience.
The society has revived the sandwich to celebrate Mrs Beeton's book, which was published in 1861 and sold more than 60,000 copies in its first year.
