This is my grandma Veri’s recipe and my all-time favourite dish when I was a kid. If there is a dish that got me into food, this is the one. At the tender age of 6, I ate 12 of these delicious tuna fish balls in one go. Although is a Basque recipe, it is not widely known at all. I know that it comes from El Regato area of Barakaldo where my grandma grew up. I guess this is a dish that she learnt from her mother and then prepared it for her family. If you cannot get hold of bonito tuna, just use fresh red tuna. The secret is not to boil the sauce when cooking the tuna balls or they will dry up. Add a freshly roasted red pepper to the tomato sauce to enhance the colour and flavour.