Zone Diet Recipe ~ Potato Soup

(Zuppa alla Provinciale)
2 large potatoes
3 tablespoons of cream or milk
2 tablespoons of butter
2 yolks of eggs
Soup stock

Boil the potatoes, then rub them through a sieve. Put them into a saucepan with the butter, a little salt, and the cream or milk. Simmer until it is thick, then add the yolks of the two eggs to form it into a paste. Turn out onto the bread-board, cut into small dice, and throw them into the stock, which must be boiling. If desired, before serving sprinkle a little Parmesan cheese into the soup.