Sterlization of casing mixture. A quick question...

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By Mr. B (Argonaut) on Sunday, December 02, 2001 - 09:14 pm:

Hi all,

Since I'd rather not pasteurize it, how long and @ what temp should I put it in the oven for??

Thanks in advance...

By Lichen (Lichen) on Monday, December 03, 2001 - 12:51 am:

1/2 hour to an hour at 350f

By Mr. B (Argonaut) on Monday, December 03, 2001 - 01:08 am:

Thanks Lichen!

By Freak Show (Freakshow) on Monday, December 03, 2001 - 02:14 am:


actually, 2-3 minutes in the microwave will sterilize just about anything, as long as there's not too much water. If it's really soggy, then you may need to go a few minutes longer.

I just got done last night sterilizing some verm. for a casing.. added some water, microwaved for 3 minutes. Had to let cool for about 40 minutes before i used in teh casing. Worked great! (well so far). :)

By Mr. B (Argonaut) on Monday, December 03, 2001 - 03:53 am:

I have a 60/40 Peat/Verm mix. I put it together but didn't add any water to it. It's pretty dry. I didn't think I needed to add water to the Peat/Verm mix.

By onediadem (Onediadem) on Friday, December 14, 2001 - 08:21 am:


Ok. no magnesium. got it. So, I can buy pickling lime at groc store. Is this sufficient? Also, I am confused about the 50/50. Do you wet the ver and peat before measuring? do you measure by cup, or weight? someones process on thrie mixing details would be fabulous. Should I get lime from health food store, better? HELP!!!!! Will be casing this weekend. thanks all, for being so patient.
Live long,

By Nan (Nanook) on Friday, December 14, 2001 - 03:27 pm:

Pickling Lime, Health food store, brew supply. Calcium Carbonate Powder. Under 2% Magnesium (hey 0% added sounds fine to me, there's plenty of this trace element in the substrate).

I dry steam sterlize 50/50 in the PC 45 min. Straw Tek Tips?

Measure by dry volume. I use a super biggie gulp to scoop measures out of the bags into a bin. Dry mix in the bin. I put a real tall standoff plate in the PC. Add water to below the plate. Open a pillow case inside the PC and fill with dry casing until the PC is full. Fold the top of the pillow case over, tuck everything in nice, set and seal the lid of the pressure cooker in place. Blast away.

When cooled lift the pillow case out of the PC and transfer to a sanitized 'maid for storage. You are going to laugh but I use a $10.00 plastic one gallon pump garden sprayer with an adjustable nozzle to wet the casing material down. Brand new, only filled with RO water.

By relic (Relic) on Friday, December 14, 2001 - 10:42 pm:

let's not forget, lowes, home depot, etc.

i use "hoffmans horticultural lime". it lists Mg @ less than 4 hundredths of a percent. a little Mg is ok. some lime, like the big bags to bury a cow or something have a buttload of Mg, that's what you want to avoid.

By Karna (Karna) on Friday, December 14, 2001 - 11:05 pm:

Just to chime in with another method that works.

I use Calcium carbonate powder or Hoffmans hydrated lime from lowe's or home depot or something if the health food store is out of CaCO3.
As for the casing, I usually case about 8-9 pints per tray.
Formula - 6 cups peat + 6 cups Verm + couple tablespoons calcium carbonate. (should give enough to case 2 medium sized lasagna pans)
I blast it at 300F in the oven for 2 hrs or so. Let cool.
Slowly add distilled water. Do not exceed 3.75 cups water per 12 cups peat+verm. 4 cups is on the little too wet side.
Good luck with your casing o ye of flaming locks

By jack cracker (Cptcracker) on Sunday, December 16, 2001 - 03:11 am:

what works for me...

5 parts sphagnum peat
5 parts medium vermiculite
1.5 parts fresh ground oyster shell (medium grind with a manual meat grinder)
.5 parts hydrolated lime
.5 parts pickling lime

components baked @350 for 1 hour, then mixed and moistened with distilled water.

sound complicated? 50/50/15/10.