Skip to main content

Home Canning Guidance

All Home Canning Guidance Content

A dial pressure canner gauge

Testing Dial Pressure Canner Gauges

For accuracy before use, it is recommended that dial gauges get tested each year. Gauges that read high cause under-processing and may result in unsafe food.

Home canning supplies and canned vegetables arranged on a countertop.

Preservation

SDSU Extension provides established and trusted research-based food preservation information.

dial on a pressure canner

A Guide To Pressure Canning

Pressure canners may have a weighted-gauge or dial-gauge, for indicating and regulating the pressure during processing.

A woman safely placing a can of salsa into a water bath canner.

A Guide To Water Bath Canning

Water bath canners have fitted lids and removable wire racks. While they come in many sizes, the canner must be deep enough to allow a minimum of 1-2 inches of briskly boiling water that covers the top of jars during processing.

collection of pressure canned food

Water Bathing vs. Pressure Canning

Water bathing and pressure canning are two common ways to preserve foods by canning. These techniques use heat processing to preserve foods, and which technique you use depends on the acidity of the food.

Jars of home-canned peaches.

Choosing a Liquid for Home-Canned Fruit

Interested in canning fruit at home? Learn some expert tips for selecting the proper liquid for your canning objectives.

Five jars of canned stewed tomatoes sitting on a gray kitchen towel with a gray background.

Food Safety Product Evaluation Request Form

Form to request a Food Safety Product Evaluation

Several canning jars filled with tomato sauce and herbs.

The “Why” Behind Unsafe Canning Practices

When choosing a food preserving method, it’s important to investigate the science behind the process and choose a method that has been researched and proven safe. This is especially important when it comes to canning.

Five jars of canned stewed tomatoes sitting on a gray kitchen towel with a gray background.

Canning Tomatoes Safely

Home canning tomatoes is a great way to preserve them for later use. It is critical to use proper methods of heat processing to ensure a safe finished product.

Several cans of homemade salsa sitting on a table.

Canning Tomato-Vegetable Mixtures

Tomatoes are unique when it comes to home canning recipes. Some tomato and vegetable recipes recommend using a boiling water bath canner, some recipes recommend a pressure canner, and some recipes offer both options.