Canning - Jar half empty!

opetMay 17, 2009

I'm a newbie to canning. I tried to make one 8 oz. jar of grape jelly just to get an idea of the process (just in case!) Well, I under estimated the amount of grapes I'd need. The jar filled just over half way full. I processed it in a boiling bath for the recommended time, but my question is...

In the future, if this happens with multiple jars and I have only enough to fill the last jar half way, should I bother? Will a half full jar go bad anyway with the all the extra headspace?

Thanks for any tips and help on this.


Thank you for reporting this comment. Undo

I would just refrigerate and use the jam. Do you have any 4 oz. jars? I always have one ready whenever I make jam. Some times I need it and sometimes I don't.

    Bookmark   May 17, 2009 at 4:13PM
Thank you for reporting this comment. Undo
ksrogers(EasternMass Z6)

Its fine, just refrigerate as mentioned. I always end up with a half filled jar at the end of a canning session. Usually, because I make big batches of jam, I fill pint jars instead of the 8 ounce ones. That way, if I have half pint, it fits into an 8 ounce. Same as above, fitting in a smaller 4 ounce jar too A vacuum will still be present, but because of the extra head space its wise to keep it in the fridge.

    Bookmark   May 17, 2009 at 7:05PM
Thank you for reporting this comment. Undo
Linda_Lou(SW Wa.)

You need to keep it in the fridge. Never process a half full jar.
If too much headspace is allowed, the food at the top is likely to discolor. Also, the jar may not seal properly because there will not be enough processing time to drive all the air out of the jar.

    Bookmark   May 18, 2009 at 3:43AM
Thank you for reporting this comment. Undo

Ah, OK. I thought there might be a problem, but just wanted some back up. ;) Thank you all for your advice.

Got to get me some of those little jars too.


    Bookmark   May 19, 2009 at 7:12AM
Thank you for reporting this comment. Undo
melva02(z7 VA)

If the last bit doesn't evenly fill a small jar, I just put it in a tiny bowl and use it over the next few days. It's always nice to have some uncanned product to see how the texture and taste came out.


    Bookmark   May 19, 2009 at 11:28PM
Sign Up to comment
More Discussions
You can't just tell me I can't use half gallon jars....
..... for canning anything but juice, and that I can't...
Katie's Roasted Garlic Tomato Soup
I made her soup the other day and I am here to tell...
Pickled beets from store canned beets
I want to can some pickled beets using canned beets...
True "Daylight Savings"
Crankshaft comic Strip for Sunday, March 08, 2015 I...
Cherry jam not setting
I made sweet cherry jam yesterday, without added pectin...
Sponsored Products
Cappuccino Multi 50 x 96-Inch Taffeta Stripe Curtain
$86.95 | Bellacor
Besa Milo 4 Pendant 3JB Light with Green Glass - 3JB-MILO4GR-BR
$360.00 | Hayneedle
Elongated Small Oil Rubbed Bronze Three-Light Hanging Bell Pendant with Clear Gl
$260.00 | Bellacor
Safavieh Handmade Cambridge Moroccan Black Wool Rug with Half-Inch Pile (2'6" x
Cuisinart Griddler Deluxe
$159.00 | FRONTGATE
Walters - Cognac leather sectional with right-arm chaise
Interior Define
Bye Bye Blue Birdie Antiqued Lanterns - Set of 2
| Dot & Bo
Hasburg 31 1/2" High Rectangular Wall Mirror
Lamps Plus
© 2015 Houzz Inc. Houzz® The new way to design your home™