Home canning folks--a corn canning question.

greybeard

Herd Master
Joined
Oct 23, 2011
Messages
5,941
Reaction score
10,822
Points
583
Location
East Texas
(It was a toss up between here and "Me, Mt Herd, My Family", but I figure "Kithchen Tips...

I raise a garden each spring and this year, decided to pressure can my sweet corn and tomatoes instead of freezing the corn as usual, since if a huricane comes, we'll be without electricity for weeks and I don't want to lose everything. The tomatoes, came out fine, about 40 pints.
I have a Presto pressure canner--with the weights--not the one with a pressure gage.

I pressure canned 8 pints of corn last night, following the directions from several websites and the directions that came with my pressure canner--to the tee. Here is what I did:

1. Blanched the corn on cob for 3 minutes.
2. Cut the blanched kernels from the cob.
3. Sterilized the jars, lids, and rings.
4. Packed the corn into the jars, covering the corn with hot water leaving a 1" head space--got as much air out as possible.
5. Put the lids and rings on the jars, snugly. New lids--new rings btw.
6. Put 3 qts of water in the canner, with the jar rack in the bottom.
7. Put the jars in the canner.
8. Put on the lid.
9. Turned on the burner, and vented steam for 5 minutes, then added the 10psi weight to the regulator.
10. Waited for the release vent to pop up, so pressure could begin building, and the regulator to start gently rocking.
11. At that point--as per instructions--I set my timer for 55 minutes as per instructions and let it do it's thing.

All went well until about 40 minutes had elapsed, and I could definitely smell corn in the steam coming from the regulator, but I let it finish, removed the canner from the heat and let it cool down on it's own. I expected to find a cracked or burst jar when I removed the pressure lid, but what I did find were all 8 jars intact but completely devoid of any liquid, tho the jars were certainly sealed upon cooling (lids were depressed).

To me, 55 minutes seems like an awful long time even at my location of near sea level, but that's what every source I have consulted says--55 minutes.

Thge instructions I used can be found here:

http://www.pickyourown.org/howtocancornrawpack.htm

and they are the same instructions that came with my pressure canner except my instructions said to blanch the corn before removing the kernals.

This is going to be some really dry corn imo, and I have about 150 ears to do today..

WHAT did I do wrong? Could I have had the heat up too high? Processed too long?
(I really don't want to freeze this year's produce)
Any input appreciated.
 

elevan

Critter Addict ♥
Joined
Oct 6, 2010
Messages
13,870
Reaction score
743
Points
423
Location
Morrow Co ~ Ohio
Timing is right for pints.

Sounds to me like your heat was too high or your dial is faulty.
 

PattySh

Loving the herd life
Joined
Apr 7, 2010
Messages
1,108
Reaction score
11
Points
104
Location
Northwest Vermont
greybeard said:
(It was a toss up between here and "Me, Mt Herd, My Family", but I figure "Kithchen Tips...

To me, 55 minutes seems like an awful long time even at my location of near sea level, but that's what every source I have consulted says--55 minutes.

This is going to be some really dry corn imo, and I have about 150 ears to do today..

WHAT did I do wrong? Could I have had the heat up too high? Processed too long?
(I really don't want to freeze this year's produce)
Any input appreciated.
The "blue book" and it states process pints 1 hour and 35 min!!! at 10 pounds pressure. Did you wipe the top rim of the jar before putting on the lid to make sure they sealed well?
 

elevan

Critter Addict ♥
Joined
Oct 6, 2010
Messages
13,870
Reaction score
743
Points
423
Location
Morrow Co ~ Ohio
Patty - My Ball Blue Book states:

Corn - Whole Kernel: pints at 55minutes and quarts at 1 hour 25 minutes
Corn - Cream Style: pints 1 hour 25 minutes
 

greybeard

Herd Master
Joined
Oct 23, 2011
Messages
5,941
Reaction score
10,822
Points
583
Location
East Texas
Yes, I wiped the jar rims clean and dry before putting on the lids and rings.

Elevan--I have no pressure 'dial'--this canner relies on the proper weight, which in this case is one weight ring on top of the regulator.

On closer inspection, I can see a 'little' liquid in each jar, but i bet it is not much more than a tablespoon or 2 at the most.

I'm leaning toward having the heat up too high, which would mean too much boiling action. I did reduce the heat a little (electric stove top) because the instructions say the regulator should just gently rock back and forth evenly. Perhaps too high even at the setting I used.
Do you think the ones I did will be safe to eat?

They did seal off ok.
 

redtailgal

New Member
Joined
Dec 8, 2010
Messages
5,369
Reaction score
27
Points
0
Were your lids HOT when you put them on?

Make sure that you wipe the rims well, and be sure to take your lids out of boiling water and put them directly on to the jar, screwing that lid on as tight as you can.

I pressure corn at 10 pounds for 70 minutes.

Leave a full one inch headspace when you pack your jars, then COVER with water.

And your dry corn should be fine......when you take it out of the jar to cook it, let it sit in some warm water for a couple minutes before putting it to the heat.

Other than that, I'd have your cooker checked. Some JC penny's and Sears will still do it, and many farm stores will do it as well.

OH......wipe the gasket in your cooker down with some vegetable oil before you seal your cooker again, sometimes that will help.
 

PattySh

Loving the herd life
Joined
Apr 7, 2010
Messages
1,108
Reaction score
11
Points
104
Location
Northwest Vermont
elevan is correct, I think I was reading "cream corn" processing time, sorry!
 

greybeard

Herd Master
Joined
Oct 23, 2011
Messages
5,941
Reaction score
10,822
Points
583
Location
East Texas
I figured I should update this--I hate it when someone has a prob and they never post back to explain how things turned out.

On the first batch, I had the heat up almost all the way and left it there the whole 55 minutes.
On all the other jars, once the regulator began doing it's thing, I turned the heat way down till it barely barely rocked, and they all turned out great.
I think I'm finally done canning for this year--put up about a dozen pints of salsa 2 days ago, but did those by boiling water method--not pressure canning.

I'm so glad every year when the garden is done..........seems like everything comes in all at once, but it gets so hot so fast here, i can't stagger out the planting schedule. Gotta get back to my fenceline spraying now.
Thanks again for the help.
 
Top