Peel the hard-boiled eggs, cut in half lengthwise and separate the whites from the yolks.
Take the yolks and put them in a bowl with the drained tuna, the chopped anchovy fillets and the chopped capers.
Add a tablespoon of mayonnaise and mix together in order to have a soft and homogenous mixture: if it is not too soft, you can add more mayonnaise.
Taste the mixture and season with salt.
Fill the cavity of whites of eggs with the mixture and decorated each egg with an olive on top of the filling.
Photo Credit: Vanessa Lollipop
If you have some leftover mixture, try it with roasted peppers or tomatoes.