Boil 4 small new potatoes with salt. Cool and cut into slices.
In a salad bowl, mix the salad mixture, cherry tomatoes cut in half, tuna (drain the juice) and capers.
The original salad used green and black olives, but I don’t like them, so I replaced them with capers.
Defrost the beans and pour boiling water over them.
Add the beans and potato slices to the salad.
The last step is refueling. Mix mustard (not spicy) with olive oil! Pour and mix the salad.