The next morning remove the fat and place the stock pot holding 6 quarts of chilled, defatted broth onto the stove and heat it to simmering.
Boil water in small saucepan, remove from heat & add 2-part canning lids to soften the seals. NOTE: Don't boil the lids!
Wash & keep canning jars hot by placing some of the water required in your pressure canner in the bottom of the jars and leave them in your canner to heat while you heat the broth. (This assures I'm not putting hot broth into a cool jar. So it reduces the chance of thermal shock and glass breakage.)
Follow your canner's directions, for my 16-quart Presto canner:
Add 3 quarts of water and a splash of white vinegar into the canner.
Add the canning trivet and place canner on the stove. Heat at medium heat while broth is heating on another burner (keep jars to be used in the canner as it's heating to get them hot before adding the hot broth.)
When broth is simmering and the jars are hot, it's ready to go into the jars.
Ladle hot broth into hot jars leaving 1" headspace. Wipe the rim of each jar to clean.
Pressure can broth at 10 pounds for 20 minutes when canned in pint jars, 25 minutes when canned in quart jars.