Muddy potatoes are to be sold in Tesco for the first time since the 1970's, but scales will be adjusted so that you only pay for spuds and not mud.
A new trial will see unwashed white potatoes sold across 262 Tesco supermarkets throughout the next six months.
The scheme, which could eventually be rolled out to all of the chain’s 2,650 shops, is being run alongside Lincolnshire-based potato suppliers Branston.
Sales of unwashed potatoes in supermarkets and grocery stores was common practice until the 1970's, as leaving the soil on would block out light and result in a longer shelf life.
Tesco and Branston say that the shelf lives of the potatoes used in the scheme so far have more than doubled, with an increase from five days to 11 days.
They have also worked out how much soil is on the average spud, and scales have been adjusted accordingly so that customers do not end up paying extra at the checkout.
It comes after a positive response to a pilot last November saw unwashed potatoes sold at Tesco stores in Bristol, where the chain says that customers were happy to purchase the products regardless of appearance.
The supermarket, which in 2013 became the first to reveal how much waste takes place as part of its operations, is hoping to gain a broader understanding of how consumers feel about buying muddy potatoes.
“Last November we ran an initial trial at stores in Bristol and the surrounding areas to see how shoppers would respond and it was a success, so now we are widening this trial across the south of England.”
The unwashed potatoes retain their quality for longer because chlorophyll forms within the cells of potatoes that are exposed to light, and this gradually turns them green.
Tesco removed ‘Best Before’ dates from more than 180 of its fruit and vegetable lines in 2018, although this measure has not yet been extended to potatoes.
Less than a quarter of food safe for human consumption went to waste in its operations in the last financial year, although the supermarket is now aiming to become zero-waste.
Potatoes are the most commonly wasted food in the homes of British consumers, according to analysis by the charity WRAP.
“We are very pleased to see how Tesco are collaborating with their suppliers to tackle food waste and bring change to their shelves,” said Will McManus, WRAP’s sector specialist for fresh produce.
Seventy per cent of total food waste beyond the farm gate comes from the home, Mr McManus added, which makes a significant contribution to global emissions.
Bread, homemade food and even supermarket ready meals are also among the most wasted foodstuffs.
Asda reintroduced unwashed potatoes to its stores in December 2006 in order to extend their shelf lives, in a move that saw sales rise by more than 20 per cent.
Supermarkets have also avoided waste during lock down by increasing sales of fresh potatoes throughout the last year. This has been done by taking on and selling bigger spuds that would normally end up being processed.
@nabob @Pinkaholic79 💖🦄🌺 @Janet 💋🍰🍝🍹 @roz @margaret.s @homebaker @harryflatters @andym.aat @Paul - MenCanCleanToo @Rustyfrog @renatew5😺🐶 @Flotson @Tanith @Flossy 🧁🧁🧁 and any one else who is interested.

I've seen slightly muddy potatos or powdered mud, ever since I've been going to Tesco, loose in a big box [@Happygirl].
@Happygirl @Tanith reminds me of when I had to do the shopping for Mum when she first became ill in the sixties. She gave me lots of shopping tips and one of them was always buy unwashed potatoes because they last longer. They had to last longer in our house as she used very few potatoes.
Morissons sell them in 7.5kg bags. Have done for years. Use a nail brush to clean the spuds.
A good idea I think, although I don't know how people will get on with them who have long or false nails, but then again you could always wear disposable gloves, as i remember when the 'clean ' potatoes came out and I thought to myself, 'great no more scrubbing to get the dirt out from under my nails '. However since then I now go for quality and also prices.
If it saves on wastage on food then it is brilliant.