They taste like crumbly light ritz biscuits with a salt and vinegar flavour.
It wasn't as salty as anticipated but there is a sweet aftertaste.
Review of Burton's Fish n Chips Lashings of Pickled Onion for further reading!
https://supersupergirl-food.blogspot.com/2019/11/review-burtons-fish-n-chips-lashing-of.html