Before you start chopping up your chicken (you don’t need a specific amount,) lay out your jars and lids so they are ready to be assembled to make the process easier. Follow the instructions in your canning manual to get your canner ready. For the All-American 921, fill it with 2-3 inches with water.
Add 1/2 teaspoon to each jar. Chop up your chicken into cubes and use a funnel to pack them into your jars leaving 1 1/4 inch headspace.
Place into your canner and process for 75 minutes for pints and 90 minutes for quarts. If you are doing a mix of pint and quart, process at 90 minutes.
Follow the instructions for your canner to release pressure. Place your jars on a flat surface and leave undisturbed for 12-24 hours.