Soup alla Modanese

Soup alla Modanese is a type of soup made with stock, spinach, butter, salt,
eggs, Parmesan cheese, nutmeg and croutons.

One pound of spinach is washed in five or six waters, then chopped very fine
and mixed with three ounces of butter and some salt. The mixture is then
heat and cooled, passed through a hair sieve and combined with a tablespoon
of grated Parmesan cheese, two eggs and a small amount of nutmeg, then
combined with boiling stock. Sometimes, hot coals are placed on top of the
lid to the saucepan so that the eggs will curdle and thicken the soup, which
is served with fried croutons.