Step by step

Fry the chopped onion and sliced gherkin, and then add a tablespoon of vinegar from the gherkin jar

Tips
Do you want to give a touch more flavour to your potato salad? Consider adding a couple of spring onions.
Trivia
The potato salad is one of those recipes that has spread to almost every part of the world, but it is believed to be of German origin, specifically from Berlin.