Canning food at home has experienced a remarkable resurgence in popularity, driven by a desire for self-sufficiency, healthier eating, and the satisfaction of preserving seasonal harvests. Among the many canning tools available, the All American canner pressure cooker stands out for its durability, reliability, and reputation among seasoned home canners. Unlike conventional pressure cookers, the All American canner is specifically designed for low-acid food preservation, such as vegetables, meats, and soups—foods that require high-temperature processing to destroy harmful bacteria like Clostridium botulinum.
Whether you’re a homesteader with a bountiful garden or a kitchen enthusiast preserving family recipes, learning how to use an All American canner pressure cooker correctly is crucial for food safety and long-term storage success. This comprehensive guide will walk you through every step of the process, from understanding how the canner works to executing safe, effective, and rewarding home canning.
Why Choose an All American Canner Pressure Cooker?
All American canners, manufactured by Wisconsin Aluminum Foundry (WAF), have been a trusted name in home canning since the 1930s. These pressure cookers differ from standard electric pressure cookers or stovetop models designed for cooking meals—they are engineered specifically for pressure canning.
Unique Design Features
One key reason for the All American canner’s popularity is its distinctive design. Most traditional pressure canners use a rubber gasket to create a seal, but the All American model uses a metal-to-metal sealing system with a clamping mechanism.
This gasket-free design:
- Eliminates the need to replace worn rubber seals.
- Reduces the risk of pressure leaks due to seal degradation.
- Better withstands long-term use and high-pressure conditions.
The canner also uses a screw-down lid secured by wing nuts, providing a tight and reliable seal. Additionally, it features a vented cover with a plunger-style pressure gauge that both indicates and regulates pressure, replacing the weighted gauges found on other models.
Durability and Longevity
All American canners are known for their lifetime durability. Made from heavy-gauge aluminum, they conduct heat evenly and resist warping. While the initial investment may be higher than other canners, their long-term reliability makes them cost-effective for serious home canners.
Understanding How the All American Canner Works
Before operating the canner, it’s important to understand its core mechanism. The All American pressure canner works by trapping steam inside a sealed environment, which increases internal pressure and elevates the temperature above the boiling point of water.
Pressure and Temperature in Canning
At sea level, water boils at 212°F (100°C), but low-acid foods such as green beans, corn, and meat must be processed at temperatures up to 240°F (116°C) to ensure pathogens are destroyed. This temperature is only achievable under pressure—typically 10 to 15 pounds per square inch (psi), depending on altitude and recipe.
Role of the Plunger Gauge
The uniquely designed plunger on the All American canner serves dual functions:
– It indicates the internal pressure via movement.
– It vents excess steam when pressure exceeds the safe level, automatically regulating the environment.
This eliminates the need for a jiggler weight and results in a quieter, more stable canning process.
Pre-Use Preparation: Setting Up Your All American Canner
Correct setup is essential for safe and successful canning. The following steps apply before every canning session:
Inspect All Components
Before use, check the following:
Lid and Clamping System
Ensure the clamps and wing nuts are intact and can open and close smoothly. Look for any dents or warping on the lid or base.
Plunger and Vent Port
Clean the plunger and vent opening thoroughly. Any blockage can prevent proper pressure regulation. Make sure the plunger moves freely and is not corroded or stuck.
Inner Pot
Although the canner does not have a removable inner pot like an Instant Pot, it does require a rack to elevate jars off the base and ensure proper steam circulation.
Gather Required Supplies
Make sure you have:
– Canning jars (Mason or Ball jars), preferably new or undamaged
– Lids and bands (lids should be new for proper sealing)
– Jar lifter
– Canning funnel
– Bubble remover and non-metallic spatula
– Clean towels and a workspace prepared
– Tested recipes from a reliable source (e.g., USDA, Ball Blue Book)
Step-by-Step Guide: How to Use an All American Canner Pressure Cooker
Using the All American canner involves precise steps to ensure safety, proper heat distribution, and effective food preservation.
Step 1: Prepare the Canning Jars and Food
Wash jars in hot, soapy water and keep them warm until ready to use—this prevents thermal shock when filled with hot food. Lids should be simmered (not boiled) for 10 minutes to activate the sealing compound.
Prepare your food using a tested canning recipe. This ensures correct acidity levels, processing times, and safety. Never improvise recipes for low-acid foods.
Step 2: Fill the Canner with Water
Add 2–3 inches of hot water to the bottom of the canner. The water level should be high enough to generate steam but low enough to prevent jars from sitting in water, which can cause breakage.
Unlike some pressure cookers, you do not fill the canner to the top with water**—only enough to create steam for the duration of the process.
Step 3: Load the Jars into the Canner
Place the wire rack in the bottom of the canner. Carefully fill your jars with prepared food, leaving the correct headspace as specified by the recipe (typically 1 inch for low-acid foods).
Wipe the jar rims with a clean, damp cloth to remove any food residue that could interfere with the seal. Apply lids and screw bands on fingertip-tight—do not over-tighten.
Use a jar lifter to place jars onto the rack, ensuring they do not touch each other or the sides of the canner. Proper spacing allows steam to circulate evenly.
Step 4: Secure the Lid
Place the lid on the canner and align it so the clamps line up with the lugs on the base. Tighten the wing nuts evenly across the lid. Do not overtighten—this can damage the clamping mechanism.
Step 5: Begin Heating
Place the canner on a flat, level stovetop burner and turn the heat to high. Open the petcock (vent valve on the lid) to allow air and steam to escape freely.
As the canner heats, you’ll see increasing steam flow from the petcock. Allow the steam to vent for 10 full minutes to purge air from the canner.
Why Is Venting Important?
Air trapped inside a pressure canner can lower the internal temperature, rendering the process unsafe. This step ensures that only pure steam remains, creating the correct environment for sterilization.
Step 6: Close the Vent and Build Pressure
After venting for 10 minutes, close the petcock by turning the plunger into the closed position. The pressure will begin to rise.
Monitor the plunger gauge closely. As pressure increases, the plunger will rise. Depending on your location and recipe, you will maintain either 10 psi or 15 psi.
Adjusting for Altitude
Altitude affects boiling points, so pressure requirements increase with elevation. Refer to official guidelines, such as those provided by the National Center for Home Food Preservation:
| Altitude (feet above sea level) | Required Pressure (psi) |
|---|---|
| 0 – 1,000 | 10 psi (dial gauge) or 11 psi (weighted gauge) |
| 1,001 – 2,000 | 11 psi (dial) or 15 psi (weighted) |
| 2,001 – 4,000 | 12 psi (dial) or 15 psi (weighted) |
| 4,001 – 6,000 | 13 psi (dial) or 15 psi (weighted) |
| 6,001 – 8,000 | 14 psi (dial) or 15 psi (weighted) |
| 8,001 – 10,000 | 15 psi (dial and weighted) |
Note: All American canners use a dial-style gauge system, so follow the dial gauge column.
Step 7: Maintain Pressure and Processing Time
Once the desired pressure is reached, reduce the burner slightly to maintain a steady, uninterrupted pressure. Fluctuations can affect the safety of your canned food.
Start the timer only when the correct pressure is achieved. The processing time varies by food type and jar size. For example:
- Pints of green beans: 20 minutes at 10 psi (0–1,000 ft)
- Quarts of beef stew: 75 minutes at 11 psi (1,001–2,000 ft)
During processing, do not open the canner or adjust the pressure unnecessarily. Keep a close eye on the plunger gauge and make only small heat adjustments.
Step 8: Cool Down and Release Pressure
After the processing time is complete, turn off the heat and let the canner cool naturally. Do not force-cool it with water or fans—this can cause jars to break or lose their seal.
Wait for the plunger to drop completely. This indicates all pressure has been released and it’s safe to unlock the lid.
Timing for Cooling
Cooling typically takes 20 to 40 minutes, depending on load size and ambient temperature. Be patient—rushing this step is a common mistake.
Step 9: Remove Jars and Check Seals
Carefully loosen the wing nuts and remove the lid, tilting it away from your face to avoid any residual steam.
Use a jar lifter to remove the jars and place them upright on a towel or cooling rack. Avoid touching the lids during cooling.
Allow jars to cool undisturbed for 12 to 24 hours. A proper seal is indicated by a concave lid center that does not flex when pressed. You may hear popping sounds as jars seal.
After cooling, remove the bands, wash the jars, label them with contents and date, and store in a cool, dark place.
Safety Tips When Using Your All American Canner
Pressure canning is safe when done correctly, but lapses in protocol can lead to serious health risks. Follow these best practices:
Always Use Verified Recipes
Stick to recipes tested by reputable organizations. Never use untested recipes from blogs or social media for low-acid foods. The USDA and National Center for Home Food Preservation offer guidelines for safe processing.
Cool Jars Gradually
Rapid temperature changes cause jars to crack. Allow the canner and jars to cool naturally. Never place hot jars in cold water or refrigerate immediately.
Avoid Overfilling
Overfilled jars may leak during processing or fail to create a vacuum seal. Always follow headspace recommendations in your recipe.
Inspect Equipment Regularly
Check your canner periodically for:
– Warping or dents in the base or lid
– Corrosion in the plunger or vent port
– Cracks or chips in jars
Discard any jars with nicks on the rim—they won’t seal properly.
Refrigerate Unsealed Jars Immediately
If a jar fails to seal, refrigerate it and consume within a few days. You may reprocess it within 24 hours using a new lid, but only if the food shows no signs of spoilage.
Maintenance and Long-Term Care of Your All American Canner
Proper maintenance ensures your canner will serve you for decades.
After Each Use
- Wash the canner with warm, soapy water (do not use abrasive cleaners).
- Rinse and dry thoroughly to prevent mineral buildup or corrosion.
- Store the lid upside down or separately to prevent seal distortion (though there’s no rubber gasket, moisture could damage surfaces over time).
Periodic Checks
- Test the plunger annually by running warm water through the vent port to ensure smooth movement.
- Clean any mineral deposits from the base with vinegar if you have hard water.
- Inspect the wing nuts and clamps for wear or stripping.
Common Problems and Troubleshooting
Even experienced canners encounter issues. Here are frequent problems and their solutions:
No Steam or Slow Pressure Build-Up
- Cause: Insufficient water, blocked vent, or burner too low.
- Solution: Check water level (2–3 inches), clean vent, and ensure proper heat source.
Popping or Hissing During Processing
- Cause: Pressure fluctuations due to inconsistent heat.
- Solution: Use a regulated burner and avoid sudden temperature changes.
Broken Jars
- Cause: Thermal shock from cold jars, improper water level, or lack of rack.
- Solution: Always preheat jars, use rack, and maintain recommended water volume.
Failed Seals
- Cause: Improper headspace, rim residue, or over-tightened bands.
- Solution: Wipe rims, use correct headspace, and tighten bands only to fingertip tight.
Why the All American Canner Is Ideal for Modern Home Preservers
In an era dominated by electric appliances, the All American canner remains a favorite among purists and practical users alike. Its simplicity, sturdiness, and reliability are unmatched. Unlike modern electric pressure cookers, which are not approved for canning, the All American provides consistent high-pressure processing ideal for preserving a wide variety of foods.
Moreover, its design supports sustainability—no disposable parts, no electronics to fail, and minimal maintenance. It’s a tool built for generations of use, aligning perfectly with eco-conscious and self-reliant lifestyles.
Conclusion: Mastering the Art and Science of Pressure Canning
Learning how to use an All American canner pressure cooker opens the door to safe, long-term food preservation. More than just a kitchen appliance, it’s a trusted companion for anyone committed to storing seasonal harvests, reducing food waste, or building food independence.
By following the steps outlined in this guide—preparing jars correctly, venting air, maintaining proper pressure, and allowing natural cooling—you ensure your canned goods are both delicious and safe to eat. With proper care and adherence to guidelines, your All American canner will serve you faithfully for years, even decades.
Whether you’re canning garden-fresh vegetables, homemade soups, or slow-cooked meats, mastering this classic tool empowers you to preserve the flavors of the season with confidence. Step by step, you’ll develop the skills and experience needed to make home canning a rewarding and sustainable practice.
How do I properly assemble my All American Canner pressure cooker?
Assembling your All American Canner correctly is essential for safe and effective operation. Begin by placing the canner body on a flat, stable surface. Insert the rack into the bottom of the canner to keep jars from direct contact with the heating element, which helps prevent breakage. Add the recommended quantity of water—usually 3 to 4 inches—for the type of food you’re canning, referring to the instruction manual for specifics. Place the canner lid on the body, aligning the handle of the lid with the handle on the body.
Next, lower the metal “jacking” screws evenly around the lid’s edge to tighten it securely. The unique metal-to-metal sealing system of the All American Canner relies on these screws rather than rubber gaskets. Tighten the screws gradually and alternately to ensure even pressure distribution and a proper seal. Once all screws are fully tightened, attach the pressure gauge to the top cap and ensure it’s properly seated. Your canner is now assembled and ready for heating.
What safety precautions should I follow when using an All American Canner?
Safety is paramount when using a pressure canner due to the high temperatures and pressures involved. Always inspect your canner before each use—check that the vent cap is clean and moves freely, and that there are no dents, cracks, or warping in the body or lid. The metal sealing surface should be smooth, and the jacking screws must operate without resistance. Wear heat-resistant gloves and safety glasses to protect your hands and eyes from steam and hot surfaces.
Never overfill jars or the canner itself. Jars should be filled according to recipe guidelines with the correct headspace, and the canner should not contain more water than recommended. Always allow steam to vent for 10 minutes before closing the vent cap to purge air and ensure accurate pressure readings. Never force-cool the canner; allow it to depressurize naturally. Rapid cooling can create dangerous pressure imbalances, potentially leading to lid failure or jar breakage.
How do I control pressure during the canning process?
Controlling the pressure accurately ensures proper sterilization and food safety. Once the canner begins releasing steady steam, close the vent cap and allow the pressure to build. Monitor the dial gauge carefully; most high-acid foods require 10 pounds of pressure, while low-acid foods typically require 10–15 pounds, depending on your altitude. Adjust the stove’s heat gradually to maintain the target pressure without exceeding it.
If pressure rises above the recommended level, reduce the heat slightly and wait for it to stabilize. Do not open the vent cap to reduce pressure while the canner is under pressure—it must depressurize naturally. Fluctuations are normal, but maintain pressure within a 1–2 pound range. Use a timer to track processing time only once the correct pressure is reached and maintained. This ensures that harmful bacteria like Clostridium botulinum are destroyed during the process.
Can I use the All American Canner on an electric stove?
Yes, the All American Canner can be safely used on an electric stove, but with a few considerations. Flat-top or coil electric burners are suitable; however, flat-top ranges require extra caution to avoid scratching the cooktop. Always use a burner size that matches the base of the canner for even heat distribution. It’s important to avoid sudden temperature changes that could crack glass-top stoves, so heat and cool the canner gradually.
One challenge with electric stoves is responsiveness. They take longer to adjust temperature compared to gas stoves, making pressure regulation slightly more difficult. Monitor the pressure gauge closely and make small, anticipatory adjustments to the heat setting. Avoid letting the canner boil dry—electric elements retain heat and can damage the canner if water runs out. Using an electric stove is effective, but requires patience and careful observation.
How do I seal jars properly using the All American Canner?
Proper jar sealing begins before the canner is even heated. Use jars specifically designed for canning, such as Mason jars, and ensure they are free of chips or cracks. Fill jars with prepared food, leaving the correct headspace as specified by your recipe. Wipe the jar rims clean with a damp cloth to remove any residue, then place a new, sterilized lid on each jar and screw the band on fingertip-tight—do not overtighten, as air needs to escape during processing.
After the processing time is complete and the canner has cooled naturally, remove the lid and take out the jars using a jar lifter. Place them on a towel-lined surface away from drafts. As jars cool, you should hear a “ping” indicating a vacuum seal has formed. Wait 12–24 hours before checking seals by pressing the center of each lid; if it doesn’t flex, the jar is sealed. Any unsealed jars should be refrigerated and consumed promptly. Proper sealing preserves food safely for long-term storage.
How do I maintain and clean my All American Canner after use?
After each use, allow the canner to cool completely before cleaning. Remove residual water and wipe the interior with a soft cloth. Wash the rack, lid, and body with warm, soapy water—avoid using abrasive cleaners that could damage the metal surfaces. Rinse thoroughly and dry all parts completely to prevent rust. Pay special attention to the jacking screws and their holes, as food particles can accumulate and affect sealing performance.
The metal-to-metal seal on the All American Canner should be inspected regularly for burrs or corrosion. Lightly lubricate the screw threads with food-grade grease occasionally for smooth operation. Store the canner with the lid upside down on the body or separately, with the screws loosened to relieve tension. Store in a dry place to prevent moisture buildup. Regular cleaning and inspection extend the life of your canner and ensure reliable performance over many seasons of use.
Can I use the All American Canner for non-canning cooking tasks?
Yes, the All American Canner can double as a heavy-duty pressure cooker for everyday cooking tasks such as preparing stews, soups, stocks, or tenderizing tough cuts of meat. Its durable construction and precise pressure control make it ideal for dishes that benefit from high-pressure cooking. Simply follow the same assembly and venting procedures, but adjust processing times according to the food you’re preparing rather than canning guidelines.
However, always ensure the canner is thoroughly cleaned before and after non-canning use to avoid contamination, especially when switching between savory meals and sweet preserves. While it functions efficiently as a cooker, remember that its primary design is for canning, so long cooking durations may require monitoring water levels to prevent boil-dry scenarios. Using it for cooking can maximize its utility, but always comply with safety practices to protect both the equipment and yourself.