The Benefits of Atmospheric Steam Canning

By Sherida Phibbs, UCCE Master Food Preserver

The Benefits of Atmospheric Steam Canning vs. Boiling Water Canning

Home food preservation has seen a resurgence in recent years, with many turning to traditional methods to ensure food security and reduce waste. Among the tools available, the atmospheric steam canner has gained attention as a more efficient alternative to the classic boiling water canner—especially for high-acid foods. But what makes it so appealing, and how does it differ from its water-filled counterpart?

What Is an Atmospheric Steam Canner?
An atmospheric steam canner is a shallow pan with a rack and a high-domed lid designed to trap steam. It uses a small amount of water—typically around 2½ quarts—to generate steam that surrounds the jars during processing. This method reaches the same temperature as boiling water (212°F) and is approved for safely processing high-acid foods such as fruits, jams, jellies, pickles, and acidified tomatoes.

Benefits of Using an Atmospheric Steam Canner

• Water Efficiency: Uses significantly less water than a boiling water canner, which typically requires 16 quarts or more.
• Energy Savings: Less water means faster heating and reduced energy consumption.
• Time Efficiency: Reaches processing temperature more quickly, saving 10–30 minutes per batch depending on your stove.
• Kitchen Comfort: Generates less heat, keeping your kitchen cooler during summer canning sessions.
• Ease of Use: Lightweight and easier to handle, fill, and empty compared to heavy water bath canners.
• Safe and Approved: Validated by research from the University of Wisconsin and endorsed by the National Center for Home Food Preservation for high-acid foods.

Important Considerations

• Processing Time: Steam canners are only safe for recipes with processing times of 45 minutes or less due to limited water capacity.
• Altitude Adjustments: Just like boiling water canning, steam canning requires adjustments for elevation.
• Tested Recipes Only: Always use research-based recipes developed for boiling water canning when using a steam canner.
• Ventilation: Ensure a full column of steam is visible before starting the processing time to guarantee proper heat transfer.

Final Thoughts

For those preserving high-acid foods and seeking a more efficient, kitchen-friendly method, the atmospheric steam canner offers a compelling alternative. It’s a modern twist on a time-honored tradition—saving time, energy, and water without compromising safety. Just remember: follow tested recipes, monitor steam flow, and respect the 45-minute limit.

Key Differences: Steam Canner vs. Boiling Water Canner