How to Home Can: Raw-Packing vs. Hot-Packing

Not all food packing methods are created equal. The USDA explains why when it comes to canning, most foods like it hot.

Raw_Hot_Packing
To raw pack (pictured left), add very hot canning liquid or water to cover raw food, leaving adequate head space. For hot packing (pictured right), boil raw foods  3 to 5 minutes in a saucepan or blancher, then pour into jars.
UNITED STATES DEPARTMENT OF AGRICULTURE