Boil the fish in salt and water; pick out all the meat and pound it in a mortar to a paste. Whilst pounding, add the butter gradually, and mix in the spice and seasoning. Put it in small pots, and pour over it clarified butter, carefully excluding the air.
Time: 15 minutes to boil the crayfish.
Seasonable all the year.
The Book of Household Management (1861).