In Spain, this is sometimes called ensalada campera. It's a filling potato and tuna salad with peppers, olives and boiled eggs. Makes a really nice change from mayo based potato salad.
If you let it sit in the fridge overnight, the flavours will blend better, but add the tomato just before serving, so it doesn't end up mealy.
Sounds like a great salad, but if you're making it for vegetarians, leave out the tuna!! - 03 May 2010
Had vegetarian friends to stay for a week and made this twice. A great success and super for parties. - 26 Oct 2009
I lived in Almeria for a couple of years and this was a popular tapa with crusty bread. Really tasty. - 27 Jul 2015