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Canning Basics for Preserving Food

Tuesday, July 20th, 2010

What does canning do?

Canning is an important, safe method for preserving food if practiced properly. The canning process involves placing foods in jars or similar containers and heating them to a temperature that destroys micro-organisms that cause food to spoil. During this heating process air is driven out of the jar and as it cools a vacuum seal is formed. This vacuum seal prevents air from getting back into the product bringing with it contaminating micro-organisms.

Safe Canning Methods

There are two safe ways of processing food, the boiling water bath method and the pressure canner method:

  • The boiling water bath method is safe for tomatoes, fruits, jams, jellies, pickles and other preserves. In this method, jars of food are heated completely covered with boiling water (212°F at sea level) and cooked for a specified amount of time
  • Pressure canning is the only safe method of preserving vegetables, meats, poultry and seafood. Jars of food are placed in 2 to 3 inches of water in a special pressure cooker which is heated to a temperature of at least 240° F. This temperature can only be reached using the pressure method. A microorganism called Clostridium botulinum is the main reason why pressure processing is necessary. Though the bacterial cells are killed at boiling temperatures, they can form spores that can withstand these temperatures. The spores grow well in low acid foods, in the absence of air, such as in canned low acidic foods like meats and vegetables. When the spores begin to grow, they produce the deadly botulinum toxins(poisons).
  • The only way to destroy these spores is by pressure cooking the food at a temperature of 240°F, or above, for a specified amount of time depending on the type of food and altitude. Foods that are low acid have a pH of more than 4.6 and because of the danger of botulism, they must be prepared in a pressure canner.

  • The low acidic foods include: meats
  • seafood
  • poultry
  • dairy products
  • all vegetables
  • High acid foods have a pH of 4.6 or less and contain enough acid so that the Clostridium botulinum spores can not grow and produce their deadly toxin. High acidic foods can be safely canned using the boiling water bath method.

  • The high acidic foods include: fruits
  • properly pickled vegetables
  • Certain foods like, tomatoes and figs, that have a pH value close to 4.6 need to have acid added to them in order to use the water bath method. This is accomplished by adding lemon juice of citric acid.

    Wheat Free vs. Gluten Free – What is Right For You?

    Monday, July 19th, 2010

    Wheat Free vs. Gluten Free

    While researching this post, I ran across a great post that pretty much covers comparing wheat free vs. gluten free and explains when and why you should be on either diet:

    WHEAT
    What contains wheat?
    Foods containing wheat are anything made with white or whole wheat flour, such as: cookies, cakes, breads, tortillas, pizza, pasta, pancakes, waffles, most fried food, tempura, dumplings, wontons, etc.; anything made with bulghur such as tabouli; wheat berries; cous cous; sauces that are typically thickened with white flour; soy sauce (although San-J has a wheat-free option).

    Why should someone want avoid it?
    Sensitivity to wheat typically results in gastrointestinal distress such as bloating, gas, constipation, diarrhea, reflux; skin issues such as rashes; and allergies/asthma such as congestion and wheezing.

    If a person is symptomatic and eliminates wheat, typically after a week symptoms should start to improve. It can sometimes be dramatic.

    What are some alternative to wheat?
    Don’t worry, there are plenty of great alternatives to wheat containing foods including: breads, tortillas, pasta, pancakes, waffles, etc. Just make sure to read labels. Most products that are wheat-free will say so on the package. Also, anything that says gluten-free is also wheat-free (even if it doesn’t say so).

    GLUTEN
    What is Gluten-free?
    Gluten-free means that a person avoids all foods containing gluten. Gluten is the general term used to describe the protein found in many grains including wheat, rye, barley, spelt, kamut, oat, triticale, semolina, pumpernickel, and farro.

    Why avoid Gluten?
    The absorptive surface of the small intestine is damaged by gluten resulting in malabsorption of carbohydrates, fat, protein, vitamins, and minerals, all of which are needed for good health (see the Gluten Free Diet by Shelley Case). This condition, called Celiac Disease (or Celiac Sprue), is an autoimmune disease that can be very difficult to diagnose as symptoms can range across everything from diarrhea and constipation to chronic fatigue and depression. Celiac is a serious disease that can be diagnosed through blood tests and intestinal biopsy. Should you suspect that you have, seek medical attention immediately.

    Please note that there is a large population of people who are sensitive to gluten though don’t have full blown celiac disease. These people also benefit from a gluten-free diet. Again, seek medical attention if you suspect you are sensitive to gluten.

    What are alternatives to Gluten?
    There are many amazing products on the market that are gluten-free including breads, pastas, cookies, cakes, pancakes, waffles, etc. It is VERY IMPORTANT to read labels. Take note that a product that says “wheat -free” only is NOT necessarily gluten-free.

    Article by: Kyle Eslick

    Control Pests and Diseases Safely with Neem

    Monday, July 12th, 2010

    These days, savvy gardeners are reaching for a gentle but effective product to deal with many pest and disease problems: neem. Extracts from the neem tree (Azadirachta indica), which is native to India, have been used for centuries for everything from cleaning teeth to killing aphids. The leaves are used in analgesic teas and skin-soothing tinctures, and powder made from the leaves has long been used in folk remedies for cuts and abrasions, because it is an effective antibacterial agent. The bark is incorporated into body care products, the twigs are used like dental floss, and various neem extracts are often included in toothpastes because they help fight cavity-causing bacteria. Neem seed oil has antibacterial properties, and crushed seed is considered a valuable soil amendment.

    Gardeners can also use neem oil to control or prevent many common plant pests and diseases (see the list below). It biodegrades quickly and, in small doses, is nontoxic to mammals, so it’s a good choice for using around the house. Neem product manufacturers list dozens of insects that can be effectively controlled with neem. It is effective against some of the more common caterpillar pests, and Japanese beetles, June beetles, and scarab beetles will not feed on neem-treated plants. Neem will also control the larvae of a number of lawn pests usually lumped together as “white grubs.” Sprays will also help to control disfiguring foliar diseases like mildews and black spot.