Ways of Preserving
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Instructions
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1.
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By Freezing.
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Foods which spoil readily are frozen for transportation, and must be kept packed in ice until used.
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Examples: Fish and poultry. 2.
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By Refrigeration.
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Foods so preserved are kept in cold storage.
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The cooling is accomplished by means of ice, or by a machine where compressed gas is cooled and then permitted to expand.
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Examples: meat, milk, butter, eggs, etc. 3.
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By Canning.
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Which is preserving in air-tight glass jars, or tin cans hermetically sealed.
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When fruit is canned, sugar is usually added. 4.
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By Sugar.
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Examples: fruit juices and condensed milk. 5.
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By Exclusion of Air.
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Foods are preserved by exclusion 27of air in other ways than canning.
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Examples: grapes in bran, eggs in lime water, etc. 6.
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By Drying.
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Drying consists in evaporation of nearly all moisture, and is generally combined with salting, except in vegetables and fruits. 7.
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By Evaporation.
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There are examples where considerable moisture remains, though much is driven off.
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Example: beef extract. 8.
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By Salting.
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There are two kinds of salting,—dry, and corning or salting in brine.
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Examples: salt codfish, beef, pork, tripe, etc. 9.
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By Smoking.
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Some foods, after being salted, are hung in a closed room for several hours, where hickory wood is allowed to smother.
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Examples: ham, beef, and fish. 10.
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By Pickling.
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Vinegar, to which salt is added, and sometimes sugar and spices, is scalded; and cucumbers, onions, and various kinds of fruit are allowed to remain in it. 11.
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By Oil.
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Examples: sardines, anchovies, etc. 12.
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By Antiseptics.
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The least wholesome way is by the use of antiseptics.
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Borax and salicylic acid, when employed, should be used sparingly.