The cod is first marinated a couple of hours in the refrigerator with crushed mustard seeds. Then served on a bed of pureed peas and then topped with a light sauce. This recipe comes from a book to be published in February, "Fish: Recipes from the Sea" which comes from Italy's "Il Cucchiaio d'Argento (The Silver Spoon)". This is the authoritative guide to Italian cooking and is the best selling cookbook in Italy. Since it was commission in 1950 to collect hundreds of traditional recipes from throughout Italy, including regional specialties, it has been updated to keep up with modern trends. Found in "Saveur" magazine.