Just a few rules that will make your food preservation safe and successful:

1.Processing Temperatures. Foods suited for canning are divided into acidic (<4.6 PH) - basically all fruits, tomatoes, sauerkraut and all acid added products (pickles) and non-acidic (4.6PH or more) - vegetables, meats, fish and mixed sauces. Acidic canned products need to be boiled (212F degrees) and non-acidic canned products need to be pressure canned (240F degrees or more) to ensure the botulinum spore is destroyed.

2.Salt. Follow the recipe for brines very accurately, a lower salt content will produce inferior results and will encourage food spoilage.

3.Vacuum seal. Preventing air from getting into your canned foods will make it impossible for aerobic microbes and fungus to survive. Best way to maintain a great vacuum seal on jars is the use of Mason jars with two part lids. Always check for popping lids, that is a sure sign that the seal was broken and the food is probably altered.

4.Sugar content. Even with a good seal fruit preserves without enough sugar will sour and mold. Follow the recipe quantities.

5.Slow cooling. Allow the preserves to cool slowly over a 12 to 24 hour period.

For more detailed information on home food preservation and safety, please check out The National Center for Home Food Preservation at http://nchfp.uga.edu

Author's Bio: 

Main Areas: Garden Writing; Sustainable Gardening; Homegrown Harvest
Published Books: “Terra Two”; “Generations”
Career Focus: Author; Consummate Gardener;
Affiliation: All Year Garden; The Weekly Gardener; Francis Rosenfeld's Blog

I started blogging in 2010, to share the joy of growing all things green and the beauty of the garden through the seasons. Two garden blogs were born: allyeargarden.com and theweeklygardener.com, a periodical that followed it one year later. I wanted to assemble an informal compendium of the things I learned from my grandfather, wonderful books, educational websites, and my own experience, in the hope that other people might use it in their own gardening practice.