If this is your first attempts at Home Canning you may be asking yourself, "What Is This About Headspace?" A good starting point would be to define headspace: this is the "space" from the top of canning jar (where the lid fits) to the point where the food or liquid fills the remainder of the jar.
What's the Big Deal About Headspace?
Canning Supplies
You probably already know that there are a few rules to follow when it comes to safely canning foods. But did you know that leaving headspace allows for the expansion of foods and the bubbling of liquids during the processing of your home canning project? What if I told you that without the correct amount of headspace your jars would not seal properly; were you aware of that? Or that if too much space is allowed the food at the top of the canning jar may darken due to air remaining in the top of the jar after processing.
Having the right amount of space at the top of the jars allows a vacuum to form while processing. The lid will then be able to seal upon completion of the method.
Recommended Amount of Headspace
Generally the amount of headspace needed varies based on what you are canning. Below is a quick guideline to follow:
Allow 1 inch for low acid foods such as vegetables and meats Allow 1/2 inch for high acid foods like tomatoes and fruits Allow 1/4 inch for jams, jellies, pickles and relishes
Now imagine for a moment what your canned foods will look like after you've finished. Can't you just smell the aroma of that fresh jam you preserved as you pop open the lid and spread some on a hot piece of toast for breakfast? Doesn't it please you to see the delight on your family's faces each time they take a bite. You are sure to gain respect and admiration for the gift basket full of your home canned goodies you give to a co-worker for their birthday.
What are you waiting for? Get started on those home canning projects now. Your family and friends will be glad you did.
