How to Stack Jars in a Pressure Canner? 9 Easy Steps for 2022

It’s possible to stack jars in a pressure canner but how to double stack jars in a pressure canner that’s the question.

You can process two layers of jars in a pressure canner at one time and this procedure is known as double-decking or double-stacking.

So, in this article, I am going to show you some easy steps of how you can double stack jars in your pressure canner.

9 Easy Steps To Stack Jars In a Pressure Canner

  • Step 1

First, you have to place a canning rack in the bottom of your pressure canner and above the canning rack pour hot water up to 2 to 3 inches of water.

  • Step 2

On the rack, you have to place filled pint jars and then place the second canning rack on the top of these jars.

  • Step 3

Then, you have to place the rest pin jars on the second canning rack and fasten the lid securely.

  • Step 4

Heat the canner on the higher temp until you see the steam flows from the petcock or vent port of your pressure canner. You have to remove the weight of your pressure canner’s vent port or open the petcock(depending on the type of canner)so that the pressure canner can reach the maximum temp.

  • Step 5

In this step, you have to vent the steam for almost 10 minutes then you have to place the weight on the vent or close the petcock. Then let your pressure canner pressurize for three to five minutes.

  • Step 6

When you see that the petcock of your Instant Pot Duo pressure canner starts to rock or the pressure gauge shows the desired pressure reached, then start timing the processing.

  • Step 7

After completing the processing time you have to turn off the heat and remove your pressure canner for the heat. Then let your pressure canner rest until it shows the pressure gauge goes to zero or no steam escapes when you nudge the weight.

  • Step 8

Now you have to remove the weight or open the petcock of your pressure canner, then open the lid using a jar lifter and remove the jars. Place the jars in a safe place so that they don’t lead to breakage.

  • Step 9

Now double stacking jars in the pressure canner is complete. You can test the seals of the jars after 24 hours. You can press your thumb on the top of the jars and if there is no movement then these are canned successfully. You can reprocess or refrigerate the unsealed jars and eat them within a few days.

For more details you can check this video:

Also Read: Difference Between Pressure Cooker and Pressure Canner– GBEF 2022


  1. Using the original recommended process time, if you notice that the pressure drops below the recommended level during processing, then you have to increase the heat level and start the timing again.
  2. You must operate your pressure canner always following the manufacturer’s instructions.
  3. Let your pressure canner cool down by itself to avoid getting unsealed jars. You should never force it to cool down like running it underwater or releasing the pressure as well.
  4. You should use pressure canners that are UL(Underwriter’s Laboratory) approved.

Besides, You may read “How to Thicken Chili in a Slow Cooker: The 15 Best Methods for Thickening Chili in 2022 article!”

Final Verdict

In fact, you can stack jars in your pressure canner either water bath canning or pressure canning.

But pressure canning is the safest practice and in this article, I have shown you easy steps on how you can do it.

Keep in mind that you should stack smaller jars instead of quart jars as the quart jars may stick up out of the water and these jars won’t be deep enough as well.

Before finishing I am leaving you a suggestion –Best Food ScalePampered Chef Air FryerTemperature KettlesElectric GrillEspresso MachinesBlenderToaster Oven &  Air Fryer !! Hopefully, its will help kitchen gear that is capable of performing lots of cooking functions… Thank you

Default image
Stephanie Haines

Stephanie Haines is a USA-based writer, a healthy home cooking, former holistic nutritionist, and has been developing healthy recipes professionally for over years. Food is my love language, and my kitchen tips and nourishing recipes are my love letter to you!

Articles: 17