A Lidl shopper managed to knock 70% off the cost of her weekly shop - totally free.
The savvy saver revealed the huge discount on the Extreme Couponing and Bargains UK Facebook page.
She snagged the deal using a little-known feature of the Lidl Plus app.
This app is a sort of loyalty scheme which offers weekly coupons and scratch cards where shoppers can get 25p to £20 off their weekly grocery shop.
The lucky shopper used the scratchcard feature to get £20 off her shopping.
She said: "If you don't have the Lidl plus app yet I fully recommend getting it."
She continued: "You get a scratchcard on the app each time you shop, and when I scratched mine this morning I won £20 off my shopping!
"Ended up getting all of this for £7.75! Absolute godsend in these hard times."
Hundreds of Facebook users congratulated the woman on the saving, with many saying they had not heard of the app's money-saving feature.
One said: "Got the app and I've never noticed the scratch card thing. Thanks!"
Another commented: "I hadn't even noticed the scratchcards so thankyou."
Shoppers using the app can also build up coupons to spend on their next shop once they reach a certain target.
Shoppers can also use the app to store all their digital receipts in one place, as well as browse weekly leaflets and seasonal magazines on the go.
The app also has offers from third-party companies - like £25 in Lidl vouchers if you swap broadband suppliers using comparison service Uswitch.
Another offer is up to 40% off cinema tickets, from The Cinema Society.
Lidl Plus can be downloaded either by the App Store or Google Play.
To activate it, you’ll need to register your details, including your email address and phone number, online.
Once you’re in, you’ll be asked to select your local store.
All coupons are for one-use only and have an expiry date of two weeks from when you make them active.
Last month Lidl became the first UK supermarket to introduce a new label that will help those who are relying on food banks.
The discounter has launched the “Good To Give” trustmark which aims to diversify the donations being given to struggling families.
Shoppers looking to donate to food banks can find the label on 30 different items across all Lidl stores in the UK.
The signage will highlight carefully selected long-life items that offer a greater variety of nutritional benefits.
The products selected include tinned fruit, lentils, mackerel, noodles, and brown rice.
Once picked up by a shopper, the item can then be dropped at food donation points located past the checkouts in Lidl stores, ready for the supermarket to deliver them to food banks.
“Good To Give” was developed by Lidl in consultation with Neighbourly - a platform that connects surplus food with local good causes.