Prepare all ingredients, minced sweet pickle, and onion finely, the finer the better.

Take a large mixing bowl and transfer the mayonnaise in it, add the lemon juice and mustard then mix until the color of mustard blends with the mayonnaise.

Add the minced onion and pickle (minced capers may also be added).

Add salt, sugar, ground black pepper and minced parsley, mix them thoroughly until well combined.

Serve in a small sauce dish paired to your favorite finger foods.