The modern packing house : $b A complete treatise on the design, construction, equipment and operation of meat packing houses, according to present American praactice, including methods of converting by-products into commercial articlesWilder, F. W. (Fred William)
History
The modern packing house : $b A complete treatise on the design, construction, equipment and operation of meat packing houses, according to present American praactice, including methods of converting by-products into commercial articles
Wilder, F. W. (Fred William)
Packing-houses
_Melting._--It is put through a hasher of the Enterprise type to an
open top water jacketed kettle, similar in type to an oleo kettle.
Frequently the melting kettle is a wooden vat with a galvanized iron
kettle inside, the space between the wooden vat and the galvanized
kettle being filled with water which is heated to the desired
temperature for melting the product. It is not practicable to use a
steam jacket as the heat would be excessive and it would be difficult
to control. This kettle properly is water jacketed and open top so no
pressure is generated.
In a kettle holding 4,000 to 5,000 pounds, water should be warmed in
the jacket before lard is put in, the agitator started slowly, not
to exceed 10 to 12 revolutions per minute, and the heat should be
regulated so as to have the lard all melted and ready to drop in one
and one-half hours from the time of starting to hash. By the time the
lard is thoroughly melted the temperature should be 126° to 128° F.
_Settling._--As soon as the lard is melted it should be drawn off with
a siphon into receiving kettles, which are also jacketed and held at
practically the same temperature. When dropped it should be salted with
one-half to one per cent of fine salt, letting it stand from fifteen to
thirty minutes. In drawing off it should be siphoned through several
layers of cheese cloth, forming a strainer, into receiving tanks,
where it should settle four hours. It is drawn into tierces through a
pipe raised from the bottom to leave one and one-half to two inches of
lard in the tank, care being taken that no “bottoms” are drawn into
the tierce, as these contain tissues which are, for the most part,
undiscernible; also moisture. These ingredients in neutral, being only
partially cooked, immediately begin to decompose. It is a delicate
article to handle and the settling of all impurities is important. The
neutral, when drawn into tierces, should be at a temperature of from
115° to 118° F.
_Storage._--The tierced lard should be kept at a temperature of about
75° F. for about ten or fifteen hours, and then put into a cooler
with a temperature of from 45° to 50° F. The tierces should be filled
through the bilge and not closed when stored in the first mentioned
temperature, the bungs being left out, while the heat is permitted
to escape, thus carrying with it considerable flavor, and making the
material more neutral than if the tierces were closed as soon as
filled.
Public-domain text, read in full here on John Shaqi.
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