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Mode_.–Choose a hen lobster, as this is indispensable, in order to render this sauce as good as it ought to be. Pick the meat from the shells, and cut it into small square pieces; put the spawn, which will be found under the tail of the lobster, into a mortar with 1/2 oz. of butter, and pound it quite smooth; rub it through a hair-sieve, and cover up till wanted. Make 3/4 pint of melted butter by recipe No. 376;put in all the ingredients