Another way.
Skin your fish, cleanse them with salt, and wipe them dry. Beat some black pepper, mace, and cloves; mix them with salt, and season your fish with it. Put them in a pan; cover with clarified butter; bake them an hour and season them well; remove the butter after they are baked; take them out of their gravy, and lay them on a coarse cloth to drain. When quite cold, season them again with the same seasoning. Lay them close in the pot; cover them completely with clarified butter; and if your butter is good, they will keep a long time.