"Inch headspace" refers to the amount of empty space left in a container after filling it. It is measured in inches and allows for the expansion of the contents due to temperature changes or pressure buildup.
Full definition
Leave 1/2
inch headspace in a freezer container or put into a freezer bag, removing all the air possible before sealing.
Transfer kombucha to glass jars for storage (swing - top bottles work well), leaving about 1/2
inch headspace at the top.
Pack drained pepper rings into the jars, leaving 1/2 -
inch headspace.
Fill jars loosely with peppers and add fresh boiled water, leaving 1 -
inch headspace.
Using a stainless - steel canning funnel, pour hot pickling liquid into hot jars, leaving 1 / 2 -
inch headspace.
Spoon the pureed pumpkin into freezer containers, zip - close freezer bags, ** or wide - mouth 1 - pint canning jars, leaving about 1 / 2 -
inch headspace.
Ladle mixture into sterilized half pint jars, leaving 1/2
inch headspace.
Top off bottle with water, leaving at least 1
inch headspace.
Ladle the jam into the sterilized jars, leaving 1/2
inch headspace.
Pour the hot brine over the vegetables, leaving 1/2
inch headspace.