Food Preservation

UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: Prevent Botulism with Proper Canning Procedures

May 6, 2026
Low acidity, a lack of oxygen, moisture and moderate temperatures are a perfect storm for toxin production.   Home canning is about more than creating a quality, shelf-stable product. When it really comes down to it, the home canning process is about making a safe product. That goal entails…
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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: How to Keep Your Pies Food Safe

May 6, 2026
Storage guidelines for homemade and commercial pies.  Whether you’re cranking out all the pies for the winter holidays (and are then faced with the question of where to keep them all), or you are making a single beautiful pie to bring to a hot summer gathering, keep your pies food safe with these…
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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: How to Use Honey When Canning Fruit

May 6, 2026
It's easy to replace a portion of sugar with honey. Whether you want to use less refined sugar, don’t have quite the amount of sugar called for in a recipe,  or just would like to add the flavor of honey in your preserved fruit products, it’s very easy to substitute a portion of the sugar for honey…
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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: Prevent Browning by Pre-Treating Fruit before Canning

May 6, 2026
Keep your canned fruit looking light and fresh. Many light-colored fruits, as well as the stem-ends of cherries and grapes, can discolor and darken when exposed to oxygen. To retain good color and flavor when canning fruit, use high-quality fruit at the proper maturity, and place prepared (peeled,…
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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: Pumpkin Butter is Unsafe for Canning

May 6, 2026
There are no safe methods for home canning pumpkin butter. Pumpkin butter is a delicious autumn fruit spread that many folks love to preserve and sometimes give as gifts for the holidays. While canning pumpkin butter was once common, decades ago scientific studies found safety issues with the home…
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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: How to Handle Raw Eggs Safely

May 6, 2026
Proper handling and preparation of eggs are important for safety.  Eggs are a wonderful, nutritious food that come so conveniently packaged in their own individual shells. But raw eggs can harbor Salmonella – both on the shell itself and inside the egg, too. Egg shells can be contaminated from…
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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: Just Say "No" to Eating Raw Batter & Dough

May 6, 2026
Be safe when handling raw flour Flour is, generally speaking, a raw agricultural product which has not undergone any treatment to kill pathogenic bacteria – such as E. coli and Salmonella – that can cause foodborne illness.  Several disease outbreaks associated with flour and flour products …
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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: Re-canning Commercially Canned Foods is Not Recommended

April 30, 2026
Buying large to break down into small is not practical and possibly unsafe. Buying large tins of canned foods, such as tomatoes and vegetables, can certainly save a lot of money, but not if you can’t consume the product before it spoils. Buying in bulk with the intention of breaking the contents (or…
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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: What are the Crystal Deposits on Pickled Asparagus?

April 30, 2026
That's rutin; weird looking, but perfectly safe to eat If you’ve ever canned your own pickled asparagus, you may have been surprised at some point to find little crystals deposited along the spears. These crystal formations are rutin, which is a pigment that occurs naturally in asparagus. Usually…
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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: Know Where to Find Helpful Preserving Advice

April 30, 2026
Safe Preserving Resources  There are many books and websites covering food preserving, but unfortunately not all of them provide good advice. Some sources provide processes or recipes that are downright dangerous. So where do you turn for research-based, reliable information? Or to find safe information…
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