What is the correct pressure and timing for quart jars of grape juice in an...
We do not recommend that you use a pressure cooker to can. I can not give you times or pressure for canning in a pressure cooker. The pressure cooker has not be tested for canning. Thus, I have no recommendations I can give you.
Grape Juice and grape jam can be processed in a Boiling Water- Bath Canner. Quarts need to be processed five minutes in a Boiling Water-Bath Canner, and grape jam should be processed five minutes in a Boiling Water-Bath Canner.