Social media users have been shocked after realising that there is a secret “hack” for salt grinders.

TikTok user @rightguysreview revealed that by popping the top part of the grinder, supermarket salt grinders will change the size of the flakes they dispense.

“I can’t believe I’m just finding this out today,” he said, before demonstrating the hack,

The hack left his followers baffled, with one commenting: “I’ve never ran so fast to my cupboard to test it out - mind blown.”