Tuscan Soup
Ingredients: Stock, eggs.
Whip up three or four eggs, gradually add good stock to them, and
keep on whisking them up until they begin to curdle. Keep the soup
hot in a bain-marie.
See also: Wikipedia Cookbook.
Source: The Cook's Decameron: A Study In Taste, Containing Over Two
Hundred Recipes For Italian Dishes from a project that puts
out-of-copyright texts into the public domain. This is from a *very*
old source, and reflects the cooking at the turn of the last century.
Update as necessary.