Shoppers have spotted Sainsbury's selling Twinings teas for just 20p in a flash promotion.
The deal, which appears on the brand's Cold Infuse tea, was first spotted by bargain hunters on Facebook page Extreme Couponing.
The drink was launched last year as part of the tea manufacturer's shift from traditional beverages to infused water - and this particular flavour will add a touch of blueberry, apple and blackcurrant to your water bottle.
But it won't be around for long - and if you do go out searching for it, you're most likely to find the deal in the clearance aisle.
It typically sells for around £3.79 for a pack of 12 tea bags - to use it, just pop the bag in with your cold water.
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