Peel and rinse the potatoes. Cut them into smaller pieces. Bring a large and high pan of water to a boil. Season with a pinch of salt. When the water is boiling, add the chopped potatoes and peeled garlic cloves. Then put a lid on the pan.
Put the olives aside until needed later. Then drain the cooked potatoes and garlic cloves. Transfer both to the same hot pan and add the blended green olives. Drizzle with a little olive oil. Season with pepper, salt and some nutmeg.