Anguilla alla Milanese (Eels).
Ingredients: Eels, butter, flour, stock, bay leaves, salt, pepper, Chablis, a macedoine of vegetables.
Cut up a big eel and fry it in two ounces of butter, and when it is a good colour add a tablespoonful of flour, about half a pint of stock, a glass of Chablis, a bay leaf, pepper, and salt, and boil till it is well cooked. In the meantime boil separately all sorts of vegetables, such as carrots, cauliflower, celery, beans, tomatoes, &c. Take out the pieces of eel, but keep them hot, whilst you pass the liquor which forms the sauce through a sieve and add the vegetables to this. Let them boil a little longer and arrange them in a dish; place the pieces of eel on them and cover with the sauce. It is most important that the eels should be served very hot.
Any sort of fish will do as well for this dish.
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.