Venetian Sauce. No. 2. (White) for Filleted Sole or Haddock, “Sauce à la Venitienne.” (Cataldi.)
Have the fish ready filleted, and get their bones from the fishmonger.
Put the bones of the fish into a saucepan, and to draw the fish stock add a bunch of herbs, i.e., 2 bay-leaves, some thyme and parsley, and one whole onion with 2 cloves stuck in it; add 1 pt. of second stock or of water; boil all these with the fish bones.
Now in a clean stewpan make a white roux of ½ oz. of butter to a spoonful of flour, and when the roux is cooked add the fish stock, boiling hot; skin and strain.
Add a little finely-chopped parsley, only the green part, and the juice of a lemon the last thing. Season and serve over the fish fillets, which have been cooked apart. (See Filleted Sole, under Fish; also see Mushroom Sauce.)