Mackerel-roe Sauce.—(No. 266.)
Boil the roes of mackerel (soft roes are best); bruise them with a spoon with the yelk of an egg, beat up with a very little pepper and salt, and some fennel and parsley boiled[232] and chopped very fine, mixed with almost half a pint of thin melted butter. See No. 256.
Mushroom catchup, walnut pickle, or soy may be added.