If you are making your own mayonnaise, my top tip is to add the oil a little at a time.
Feel free to adjust the amount of gherkins, capers, lemon juice and mustard to suit your own tastes. Add a little bit and taste and then you can always add more.
We recommend putting the sauce in the fridge for 30 minutes before serving, as it lefts the flavours all come together.
For a lighter sauce, swap half the mayo for Greek yogurt.