This is what I had for my main course yesterday. It may not look very appetising but it was very tasty and is a typical dish of the Vega Baja. It had simple, cheap ingredients combined in a way to provide a filling dish.
The meatballs were made from mainly livers, the large round pelotas you can see were dough balls, the small ones beans. The large chunks were potato and the meat at the front was a piece of chicken on the bone.
There are of course herbs and spices in there to give flavour and that glorious yellow colour.
You find this dish (albondigas con pelotas) in a variety of forms in many restaurants of the area, it is well worth trying if you come across it; I can certainly recommend the Herradura version.