Boil the potatoes until they are soft. Then mash them with potato masher or fork (I mashed with blender and it became sticky). Add salt, milk, butter and mix all together properly.

Fry the blind finches with olive oil for 2 minutes. Slice onions and add to the pan, cook all together 2 minutes more. Add diced tomato, salt and black paper and cook 1 minute more.