Fish and chips is the national dish, most commonly enjoyed with lashings of salt and vinegar, but the vinegar may actually not be real according to claims.
Few of us can resist this classic seaside treat, but it turns out all is not as it seems.
Sure the cod and chips are the real deal, but it turns out the "vinegar" served in your local fish and chip shop probably isn't real vinegar, reports WalesOnline.
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This is according to YouTuber Tom Scott, who revealed in a recent video many chippies instead use something known as a non-brewed condiment in place of vinegar.
You've probably never been able to tell the difference between the two, as it looks very similar to the real thing and only tastes slightly different.
A non-brewed condiment is a malt vinegar substitute made from water, acetic acid and various flavourings – yummy!
It takes less time to make than actual vinegar and can be purchased in concentrated form.
It also possesses several other benefits that the real stuff doesn't have.
For example, it doesn't contain any alcohol, making it halal and a great choice for teetotal customers.
Some batches of the condiment are also gluten-free, meaning businesses can cater to a wider range of people with it.
Regardless many of us are unlikely to tell the difference.