Ingredients: Stock, sorrel, endive, lettuce, chervil, celery, carrot, onion, French roll, Parmesan cheese.
Boil the following vegetables and herbs in very good stock for an hour: Two small bunches of sorrel, a bunch of endive, a lettuce, a small bunch of chervil, a stick of celery, a carrot and an onion, all well washed and cut up. Then put some slices of toasted French roll into a tureen and pour the above soup over them. Serve with grated Parmesan handed separately.
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.