Food Preparation

UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: Cook Red Kidney Beans Safely to Destroy Toxicity

May 7, 2026
Cook them properly and not in a slow cooker! Red kidney beans are a healthy food – unless they’re not cooked properly. They contain a compound (“PHA”), found in many types of beans, and at especially high levels in red kidney beans. PHA can be toxic at high levels; in fact, consuming only 4 or 5 raw or…
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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: How to Test a Pressure Canner Dial Gauge at Home

May 6, 2026
Canning Basics: Use a weighted gauge to test a dial gauge's accuracy. Pressure canner dial gauges* should be tested annually for accuracy to ensure that food is not under-processed (and thus potentially unsafe) or over-processed (resulting in lower quality food). Many Cooperative Extension services will…
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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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UC Master Food Preservers of Central Sierra: Article

Preserve it! Series: How to Make Safe, Personalized Salsa Recipes for Canning

April 30, 2026
Safe ingredient swaps for home-canned salsa Salsa contains a combination of high- or borderline high-acid ingredients (such as tomatoes or fruit) and low-acid ingredients (such as peppers, onions, or other vegetables). Acid in the form of vinegar or bottled lemon juice is added to ensure the appropriate…
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