228. To stew Mackerel.—Take off the heads, the fins, and tails, and, having opened the fish and taken out all the hard roes, dry them with a cloth and dredge them lightly with flour; place three or four of them in a stewpan, with a lump of butter, the size of a walnut, to each fish; put into a small basin a teacupful of water, a tablespoonful of finely-chopped onions, the same of chopped parsley, a blade or two of mace, a little pepper and salt, a tablespoonful of anchovy essence, and a small teacupful of ale or porter (if not bitter). Add a tablespoonful of grated bread-crust, not burnt, but a light brown; pour all these ingredients over the fish, and let them stew gently for twenty minutes; have ready the yolks of three eggs, well-beaten, and when the fish is sufficiently done, take some of the gravy and mix gradually with the eggs, and, pouring them on the fish, shake the stewpan a little over the fire to thicken the whole, but not to curdle the eggs; the soft roes added are an improvement: have ready more grated crust, and having placed the fish whole in the dish, shake a little of the grated crust over the whole, so as to make it of a handsome brown. The Receipt requires to be carefully followed. If the gravy is too thick, more water may be added; also a glass of sherry, if liked.