0
(0)
CATEGORY CUISINE TAG YIELD
Canning, Information 1 Half

INGREDIENTS

INSTRUCTIONS

Acid foods - Foods which contain enough acid to result in a pH of 4.6 or
lower. Includes all fruits except figs; most tomatoes; fermented and
pickled vegetables; relishes; and jams, jellies, and marmalades. Acid foods
may be processed in boiling water.
Altitude - The vertical elevation of a location above sea level.
Ascorbic acid - The chemical name for vitamin C. Lemon juice contains large
quantities of ascorbic acid and is commonly used to prevent browning of
peeled, light-colored fruits and vegetables.
Bacteria - A large group of one-celled microorganisms widely distributed in
nature. See microorganism.
Blancher - A 6 to 8 quart lidded pot designed with a fitted perforated
basket to hold food in boiling water, or with a fitted rack to steam foods.
Useful for loosening skins on fruits to be peeled, or for heating foods to
be hot packed.
Boiling-water canner - A large standard-sized lidded kettle with jar rack,
designed for heat-processing 7 quarts or 8 to 9 pints in boiling water.
Botulism - An illness caused by eating toxin produced by growth of
Clostridium botulinum bacteria in moist, low-acid food, containing less
than 2 percent oxygen, and stored between 40 degrees and 120 degrees F.
Proper heat processing destroys this bacterium in canned food. Freezer
temperatures inhibit its growth in frozen food. Low moisture controls its
growth in dried food. High oxygen controls its growth in fresh foods.
Canning - A method of preserving food in air-tight vacuum-sealed containers
and heat processing sufficiently to enable storing the food at normal-home
temperatures.
Canning salt - Also called pickling salt. It is regular table salt without
the anticaking or iodine additives.
Citric acid - A form of acid that can be added to canned foods. It
increases the acidity of low-acid foods and may improve the flavor and
color.
Cold pack - Canning procedure in which jars are filled with raw food. "Raw
pack" is the preferred term for describing this practice. "Cold pack" is
often used incorrectly to refer to foods that are open-kettle canned or
jars that are heat-processed in boiling water.
Enzymes - Proteins in food which accelerate many flavor, color, texture,
and nutritional changes, especially when food is cut, sliced, crushed,
bruised, and exposed to air. Proper blanching or hot-packing practices
destroy enzymes and improve food quality.
Exhausting - Removal of air from within and around food and from jars and
canners. Blanching exhausts air from live food tissues. Exhausting or
venting of pressure canners is necessary to prevent a risk of botulism in
low-acid canned foods.
Fermentation - Changes in food caused by intentional growth of bacteria,
yeast, or mold. Native bacteria ferment natural sugars to lactic acid, a
major flavoring and preservative in sauerkraut and in naturally fermented
dills. Alcohol, vinegar, and some dairy products are also fermented foods.
Headspace - The unfilled space above food or liquid in jars. Allows for
food expansion as jars are heated, and for forming vacuums as jars cool.
Heat processing - Treatment of jars with sufficient heat to enable storing
food at normal home temperatures.
Hermetic seal - An absolutely airtight container seal which prevents
reentry of air or microorganisms into packaged foods.
Hot pack - Heating of raw food in boiling water or steam and filling it hot
into jars.
Low-acid foods - Foods which contain very little acid and have a pH above
4.6. The acidity in these foods is insufficient to prevent the growth of
the bacterium Clostridium botulinum. Vegetables, some tomatoes, figs, all
meats, fish, seafoods, and some dairy foods are low acid. To control all
risks of botulism, jars of these foods must be (1) heat processed in a
pressure canner, or (2) acidified to a pH of 4.6 or lower before processing
in boiling water.
======================================================= === * USDA
Agriculture Information Bulletin No. 539 (rev. 1994) * Meal-Master format
courtesy of Karen Mintzias
From Gemini's MASSIVE MealMaster collection at www.synapse.com/~gemini

A Message from our Provider:

“Love is the doorway through which the human soul passes from selfishness to service. #Jack Hyles”

How useful was this recipe?

Click on a star to rate it!

Average rating 0 / 5. Vote count: 0

No votes so far! Be the first to rate this recipe.

We are sorry that this recipe was not useful for you!

Let us improve this recipe!

Tell us how we can improve this recipe?