The fat of meat consists of fat held by a network of connective tissue. To make meat fat suitable for frying it is necessary to separate the fat from the tissue. This is done as follows:
Remove the tough outside skin and lean parts from meat fat and cut it into small pieces. Put the fat into an iron kettle, and cover it with cold water. Place it uncovered on the stove and heat. When the water has nearly all evaporated, set the kettle back, or lessen the heat, or place in a "cool" oven, and let the fat slowly try out.
As the fat separates from the pieces of tissue, it is well to strain or drain it into a bowl. If this is done, the fat is less apt to scorch. The heating of the connective tissue should continue, until it is shriveled in appearance and no fat can be pressed out from it with a fork. The strained fat should be set aside to become firm and then stored in a cool place.