The company developed the product at the request of chip shop owner and customer Lefteris Eleftheriou of Grimsby Fisheries.
He was looking for an alternative to vinegar which did not make chips go soggy.
Pinch of salt
Kerry developed vinegar-flavoured salt shakes for Eleftheriou, which also have a third less sodium than normal salt.
A Kerry Flavours and Ingredients spokesman said: “We are at an incredibly early stage with this. It is only on trial in one chip shop in the Midlands, and there are no plans to roll it out.”
Any potential roll-out would be through chip shops and restaurants he said, rather than as a retail product.
Kerry is a key supplier to the chip shop market, which has around 10,500 UK outlets.