Now is the time to get dial gauges tested on pressure canners. Here are some reminders.
Most Extension offices have the Presto Gauge Testing Unit. This can test pressure gauges on the brands Presto, National, Maid of Honor, and Magic Seal.
This testing unit cannot test All American pressure gauges. Newer models of the All American canner have both regulator weights (weighted gauge) and the dial gauge. (See top picture.) The weight is more accurate than the gauge and customers should use the weight in order to determine if they are at the needed pressure. If the weight begins to rock at the desired pressure and the gauge is off by more than 2 psi the company recommends replacing the gauge. The gauge is now used as a reference to know when the unit is at 0 psi and can safely be removed.
There are no science-based instructions to home can cured, brined or corned meats. Here is some information from Clemson University Extension.
“The texture of some cured, brined and corned meats is firmer than that of fresh meats; thus, heat penetration into the cured, brined or corned products might be more difficult. That would mean the process time would need to be longer and using the process for fresh meats would result in potentially unsafe product. Curing can make meat drier than fresh meat or can leave it with a higher salt level, then covering liquid could be absorbed into the flesh and penetration of heat into the meat would be much more difficult. Again, using the process for fresh meats would result in potentially unsafe product. On the other hand, adding salt, nitrite, nitrate and/or antimicrobial agents like nisin makes Clostridium botulinum more susceptible to heat and the required process time for some cured meats could be shorter. If so, using the fresh meat process would result in an overcooked product. Research on each product would be needed to determine a safe canning process.”
Summer is still in full force, but fall and winter are on their way! Soup is a great way to warm up a chilly day.
Canning soup can be done with ingredients that already have separate canning recommendations. This includes a variety of vegetables, dried beans or peas, meat, poultry, or seafood based soups. These soups must be pressure canned.
Caution: Do not add noodles or other pasta, rice, flour, cream, milk or other thickening agents to home canned soups. If dried beans or peas are used, they must be fully rehydrated first.
The University of Georgia has added a couple new resources to the National Center for Home Food Preservation website.
Onions are a popular vegetable to grow in the garden. Preserving them for later use can be done several ways including freezing, drying, pressure canning or using in a relish. For more information, see http://nchfp.uga.edu/tips/summer/onions.html.
Do you enjoy the tangy taste of oranges? Try this easier and faster recipe for Orange Marmalade. Read through the recipe. Do you know the definition of “albedo?” It is the white pith or tissue just under the outer orange layer. The albedo contains natural pectin so this recipe does not require added pectin. When cooking the marmalade, use the “jellying point” technique to determine when the marmalade is sufficiently cooked. The recipe is located at http://nchfp.uga.edu/how/can_07/orange_marmalade.html.
Half-gallon sized canning jars are available, but they are not recommended for canning many foods. In fact, the only products recommended by the manufacturer to can include apple juice and grape juice ONLY in a boiling water bath canner.
There are no other research-tested processes for half-gallon jars. Boiling water processes for other foods for jars larger than those published with recipes (usually pints and/or quarts) cannot be extended by any formula to a larger jar.
Historical canning resources may reference the use of half-gallon jars. However, these are not currently accepted or endorsed by the USDA, Cooperative Extension, or U.S. canning jar manufacturers.
This year, jars for canning are going retro again! Ball® jars are now available in the amber color. They are in wide mouth pint, wide mouth quart, and wide mouth half-gallon sizes. The first amber colored jars date back to the late 1800s. The color was made because emissions from the coal furnace permeated the glass pots causing clear glass to become amber in color.
Lots of accessories are available to transform jars into many non-canning uses. There are also accessories for adding decoration or for transforming jars into beverage containers and special lighting. Replacement parts for Ball® appliances are also available.
As canning season winds down, now is a good time for Extension offices to get their Presto Pressure Gauge tester serviced.
This service is done at no cost to you by National Presto Industries as the purchase cost of the tester includes maintenance. They will examine the master gauge and the entire unit for updates of other parts. For questions, contact:
Corporate Home Economist
National Presto Industries
So you saved your tomato crop in the freezer. Can those frozen tomatoes be canned?
It is not recommended to can tomatoes that froze on the vine. This is because the acid content changes too much making them unsafe for canning. But tomatoes harvested prior to a fall freeze, then frozen, do not change in acidity. What does change is their texture and how they measure.
The best choice for canning previously frozen tomatoes is to make a well cooked product such as a stewed or crushed tomato product, or made into tomato juice or sauce.
It is not recommended to can them whole or quartered. They will pack into the jars differently, absorb moisture differently, and the heat transfers through the jars differently. This could lead to underprocessing and spoilage. Tomato canning recipes are based on fresh tomatoes.
If you use well water, annual testing for water safety is important. If your report shows high levels of nitrate and/or nitrite, steps must be made to make the water safe.
In home canning or in cooking, boiling the water will not remove nitrate or nitrite. In fact, heat will concentrate and increase the content. The Environmental Protection Agency states the maximum total nitrate and nitrite level is 10 parts per million.
Treat well water with anion exchange, distillation, electrodialysis or reverse osmosis processes. Contact a water treatment professional to select the right treatment for your well water.
The internet abounds with untested, and potentially unsafe canning recipes. With sun pickles, you fill a jar with cucumbers, add salt, and then fill with cold water. Apply the lid and ring. Then the jar is allowed to sit in the sun each day until the water turns from clear (at the start) to cloudy (in the middle of the process) and then clear again (at the end). According to the recipe, when the water becomes clear again, the pickles are ready to use.
This type of recipe is not safe. This recipe presents a risk of illness linked to three major foodborne pathogens: E. coli O157:H7, Clostridium botulinum, and Listeria monocytogenes.
Why is this recipe so unsafe?
The ratio of salt/water/cucumber is not defined. The precise ratio of these ingredients found in tested recipes allows good bacteria on cucumbers to grow and produce acid (and a safe product), and prevents pathogens (the harmful bacteria) from growing.
The temperature inside a jar sitting in the sun could rise above 72°F, too high for proper fermentation. High fermentation temperatures lead to spoilage or allow pathogen growth.