Key Highlights:
- Reddit user u/NoCarrot2064 sparked an online debate after posting photos of two Asda 500-gram butter packs registering 416 grams and 423 grams on a kitchen scale.
- Commenters widely questioned the accuracy of the kitchen equipment, proposing calibration checks using coins or 500 milliliters of water.
- The discrepancy was not independently verified, leaving unresolved whether the low readings stemmed from faulty scales or actual packaging shortfalls.
Social Media Debate Over Asda Butter Weights
An online discussion regarding supermarket packaging standards erupted after Reddit user u/NoCarrot2064 shared pictures on the r/AskUK forum comparing labeled weights against household scale readings. The user posted photographs of two standard 500-gram packages of Asda butter—one salted and one unsalted—resting on a digital kitchen scale. According to the images, the salted butter registered at 416 grams while the unsalted variety weighed in at 423 grams, both falling significantly below the 500-gram quantity stated on the wrappers. The poster noted having experienced comparable variations when purchasing butter from Lidl and asked fellow forum members whether such a weight deficit was legally permitted or warranted a formal complaint to the grocer.
Debating Household Scale Accuracy and Calibration Tests
The post quickly shifted attention away from supermarket practices toward the reliability of home measurement tools, with numerous commenters suggesting that uncalibrated equipment was the most probable culprit. Pointing toward potential hardware failure, one commenter wrote, “My first thought here is your scales are probably shit. Try someone else’s.” To troubleshoot the issue without purchasing new gear, another user suggested checking the scales before contacting the supermarket. “Weigh a coin to get the calibration checked ,” they wrote.
Other users offered step-by-step methods using liquid volume as an impromptu benchmark. “Get an empty measuring jug, place [it] on the scale, and zero the weight,” [sic] the user wrote, advising the poster to introduce 500 milliliters of water to gauge the scale’s precision. That advice sparked another discussion about whether measuring jugs could introduce errors. Another Reddit user wrote, “I’d wager it’s a scale issue,” offering an assessment based on the initial post.
Legal Tolerances and Batch Averages
Beyond instrument testing, the conversation touched upon the commercial regulations that govern packaged foods in the United Kingdom. “There is a legally permitted difference between the labelled weight and the actual product weight,” one user wrote, urging the poster to verify the measuring device before making an official inquiry. Offering another theory on industrial production, one commenter wrote, “It’s possible they average 500g across the full batch and you got super unlucky.”
The thread also featured classic British satire. One commenter quipped, “i cant believe its not 500g butter” [sic], while others poked fun at traditional consumer outrage. One user wrote, “That’s definitely worth a strongly-worded letter to the Telegraph.” Another commenter responded with the mock sign-off, “Signed, Outraged of Tunbridge Wells.” Despite the lively exchange, the thread provided no independent scale testing to verify whether Asda underfilled either container, and The Daily Dot could not independently verify the weights shown in the photos or the scale’s accuracy.
Why This Matters
Scrutiny surrounding everyday grocery items has intensified as consumers remain acutely sensitive to food costs and potential discrepancies in product sizing. Under weights and measures rules in the UK and European markets, pre-packaged goods typically adhere to an average quantity system, which permits limited, legally defined tolerances across production batches rather than guaranteeing an exact weight on every single unit. However, viral allegations of underfilling also underscore how fragile consumer trust can be when digital scales show substantial shortfalls—even when those discrepancies may stem from uncalibrated household tools rather than manufacturing errors.
Frequently Asked Questions
Were the Asda butter packages confirmed to be underweight?
No. While the photos shared by u/NoCarrot2064 displayed readings of 416 grams and 423 grams on a digital scale, no independent verification of the kitchen scale’s calibration was conducted, leaving the true weight of the butter packs unconfirmed.
How did commenters suggest testing a kitchen scale?
Forum participants suggested several improvised home tests, including weighing a standard coin with a known reference weight or taring an empty measuring jug and adding 500 milliliters of water, which weighs approximately 500 grams.
What explanation did users offer regarding packaging weights?
Commenters pointed out that packaged goods are frequently subject to batch average rules and statutory tolerances, suggesting that occasional variance can occur, while others maintained that a scale malfunction was the most plausible explanation for a gap of more than 70 grams.




