The UK's biggest supermarket is launching a campaign to tackle "breathtaking" amounts of food waste which it says costs households £700 a year.
Tesco will unveil its food waste strategy on Thursday when it is also expected to reveal chief executive Philip Clarke and 5,000 top managers missed out on bonuses last year after profits halved.%VIRTUAL-SkimlinksPromo%
The retailer's new waste plan includes selling food in smaller sizes in its convenience stores, and tailoring promotions away from goods with shorter shelf lives.
Mr Clarke admitted it may mean customers buying less food from Tesco, but said the supermarket has a responsibility to tackle a "long-term risk to society".
He said in the Sunday Telegraph: "The volume of food wasted every year is simply breathtaking. In the UK, the average family wastes nearly £700 a year by throwing out food they don't eat. None of us can afford the current levels of waste to continue."
He said the rising global population - expected to hit 9 billion by 2020 - means the planet cannot continue wasting huge volumes of food while demand soars.
The supermarket's new Tesco and Society campaign will be published on Thursday alongside its annual report.
The retailer will make use-by codes on packaging clearer and give tips on how to use leftover food, as well as will tackling waste in-store, including at its bakeries, and encouraging suppliers to waste less through smarter forecasting of demand.
Mr Clarke said: "It may sound counter-intuitive for Tesco to help our customers reduce the amount of food they waste, because it is likely to involve reducing the volume of food they buy, and I understand some people might be sceptical hearing it from a supermarket chief executive.
"But the issue that we are trying to solve is a long-term risk to society. I want to use our scale and the reach that our customers have given us to serve our society in return."
Seven of the craziest supermarket glitches
Tesco to unveil food waste strategy
One of the most popular glitches, was a wine deal at Tesco back in November 2012, where a series of offers clashed, leaving a bottle of £9.99 wine selling for £1.50.
The 'three wines for £10' deal apparently clashed with a '25% off when you buy six or more bottles' deal. The 25% was accidentally taken off the original price rather than the reduced one, leaving the wine at rock bottom prices. Deal-hunters cleared the shelves around the country.
Perhaps the most popular glitch from Tesco came in June 2011, when instead of taking £4 off the cost of a £20 case of beer, the supermarket accidentally started selling the cases for £4. The ensuring rush was nicknamed the 'beer stampede'.
Sadly not every supermarket pricing glitch comes with such a happy ending for consumers. In March last year the bargain-hunters thought their luck was in, when Tesco accidentally priced the new iPad at just £44.99 instead of around £650. Sadly it spotted the mistake before shipping the goods. The small print on its website meant it could refuse to sell at this price, and refund their customers instead.
In September 2012, Asda was responsible for one of the most expensive glitches. The Asda Price Guarantee offered vouchers to customers who could have got their shopping cheaper elsewhere.
However, when certain trigger products were in the basket, the supermarket massively under-priced the shopping at other supermarkets, and offered huge vouchers to shoppers. In many instances the vouchers came to roughly the same as the cost of the shopping.
In April, a mistake on their website resulted in Tesco selling 8 packs of Bulmers cider 568ml bottles for £5 - rather than a six pack for £8.
Deal-hunters snapped up the deal online, and had varying degrees of success. Some had their order delivered in full, others had six delivered for £5 - and were able to negotiate their way to another two, while others were offered six for £5 or their money back.
October last year saw one of the most famous glitches, when Tesco Terry's Chocolate Oranges were subject to two deals at the same time, and the price dropped from £2.75 to 29p. There were plenty of people getting chocolate oranges last Christmas.
A buy-one-get-one-free deal went awry at Tesco in March. People putting four tubs of I can't Believe It's Not Butter or Oykos yogurt packs into the trolley were only being charged for one.
Soon the online deal-hunting community was in action, with one person bagging 50 tubs of butter and 22 pots of yogurt for £8.79 - a saving of £133.89.