Yob
Hop to it
Coopers give **** advice about yeast
pitching such a small amount of yeast into a large starter isnt good for themMattrox said:Coopers' instructions say use 6 tablespoons of sugar with 600mL of water for yeast slurry from 4 bottles then pitch at active ferment. Now, assuming is dangerous, but I do assume that this is for most of their Kit and Kilo type recipes which typically end up around 1.045 or so.
So without molar calculations, I used 100g of malt for 1L of water for 5 bottles worth of yeast slurry. But the yeast is going to be pitched on a higher OG wort than 1.045 so being limited in volume, I used the same 100g of malt in 1L of water to "step-up". The big moccona jars hold that easily. And the DIY stir plate worked well and today I had a jar looking like Murray River water. I'll try to calculate the amount of yeast from the "allow the yeast to settle, then pour off the spent wort until equal amounts of yeast and wort remain. Re-suspend the yeast and measure (I'll Calculate) the volume and use the 1B cells per ml" method.
I also read that 100B cells pitched into a 1L starter on a stir plate will yield 246B cells. So that gives me a ball park to work from.
We'll see how the yeast works on the wort. And I'll find out a little about freezing yeast too.
Mate, I absolutely admire your quest for perfection in your beers & I share that quest with you......Mattrox said:Now, assuming is dangerous
Assuming IS dangerous
So without molar calculations,
Uh-oh! We're getting into "Seriously Geeky" here......
I'll try to calculate the amount of yeast from the:
"allow the yeast to settle, then pour off the spent wort until equal amounts of yeast and wort remain. Re-suspend the yeast and measure (I'll Calculate) the volume and use the 1B cells per ml" method.
I also read that 100B cells pitched into a 1L starter on a stir plate will yield 246B cells. So that gives me a ball park to work from.
Yeah, a good ballpark. Up or down a little won't hurt.
We'll see how the yeast works on the wort. And I'll find out a little about freezing yeast too.
Good idea
I said slant, but not really what I meant. Vials then.Yob said:In principle, I don't see why it wouldn't freeze the same as any other yeast with the process outlined in this topic. I certainly wouldn't be freezing slants though.
I'm wondering if the strains need to be split, cultured, then frozen and re-mixed in the correct ratios to maintain the original blend - hence my other comments.Yob said:Plating it out kinda defeats the purpose of it being such a simple process, just mix the vial well, split, add glycerine and freeze is what I'd do.
No. Isn't the whole premise here that it can be done in a regular freezer we all have at home? Put the vials in a foam box with ice packs to buffer the freeze/thaw cycle from the frost-free ********, meaning we don't need a deep freezer.Yob said:You have a deep freezer? If not there are other things you need to do.
Im suggesting that if that were filled with a salt water frozen solution it would be less prone to any temperature fluctuation from a that cycle, whereas, if the vials are in there on their own, its the surface of the vials that act as the coolant.. I know which I'd rather the warmer air be attracted to firstmofox1 said:I use one of these. $9 at aussie disposals.
Dare say you could make your own with a bit of spare styro and gaffa tape that would work just as well.
Issue is .. I have those tubs and they crack really quickly in the freezer.. I am looking for new ones that will last the freezer ! but love the racking idea.. GOLD!Yob said:so Ive decided to tackle storage, my current method is a bit random and it can be hard to find a vial of something in the 55lt container.
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there is a fair bit of cutting involved but its going to be ******* stirling..
15 x 11 and I can fit at least 2 layers in the tub which lives in the bottom of my 1100lt deep freezer..
this is going to be epic
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