Gravy cakes

Chop 2 legs of beef in pieces, put them into a pot of water, stew it over a slow fire a day and a night; then add onions, herbs, and spices as for gravy; continue stewing it till the meat is off the bones, and the gravy quite out; then strain the liquor into a milk-pan, to which quantity it should be reduced; when cold, take off the fat, put it into a saucepan, and add whatever is required to flavor it; simmer it on a slow fire till reduced to about 12 saucers twothirds full, put them in an airy place till as dry as leather, put them in paper bags, and keep in a dry place.

see Wikipedia Cookbook