Once it has a smooth consistency, season to taste and mix in the chopped gherkin, chopped capers, boiled egg, also chopped, the green onions, the parsley and lastly, a teaspoon of mustard.
Arrange the sole lollipops in a glass and serve the Tartar sauce in a sauce boat on the side.
For this recipe we recommend using Arbequina Extra Virgin Olive Oil from Spain for its almond aroma and slightly peppery and bitter notes. Its smooth taste makes it ideal for making mayonnaise. But everyone brings their own personal touch to the kitchen, so experiment by using your preferred Olive Oil from Spain.