First of all, wash the potatoes and boil them for about 20 minutes until they become soft. Subsequently mash them by using a potato masher.

Add salt, pepper, corn starch, Grana Padano and a egg. Mix well all the ingredients until you obtain a firm dough and easily processable with your hands.

In the meantime, take a pan, pour a filet of oil and add the tastasal. Start cooking it by deglazing it with red wine and adding salt and pepper. Once cooked, let it cool down.

Now, take a bowl and pour the cooked tastasal pesto, chopped olives, scamorza cut into cubes and a filet of oil. Mix well all the ingredients in order to obtain a homogeneous mixture.

Now start forming your balls: take a handful of potato mixture, form an half ball and fill it with the mixture prepared in the bowl. Then take another handful of potatoes and close the ball.

Continue in the same way until all the ingredients finish.

Place the balls on a baking tray and let them cook at 180°C for about 15-20 minutes. Once ready, take them out and serve them hot.