|
Post by zymot on Mar 18, 2022 18:20:41 GMT -6
I have a spare bottle of medical oxygen. I pumped some O2 into my last SNS bottle. I use the foam bacteria barrier stoppers in my bottle.
It was as strong of a ferment as I ever seen.
|
|
|
Post by zymot on Mar 24, 2022 3:57:08 GMT -6
I always had an intuition based unease about the Mr Malty philosophy on starters. Things did not add up for me.
People would get on line and proclaim I had to make some large starter before I could make beer. A starter is basically beer. So I had to make beer before I made beer.
I know how a starter on a stir plate is designed to grow yeast cell counts, not good tasting beer. But I did some wyeast & white labs direct pitch, the beer did not suck.
I wondered about yeast cells getting damaged when caught between the stir bar and the flask. I wondered about reports that yeast labs never used stir plates.
|
|
|
Post by denny on Mar 24, 2022 12:29:19 GMT -6
I always had an intuition based unease about the Mr Malty philosophy on starters. Things did not add up for me. People would get on line and proclaim I had to make some large starter before I could make beer. A starter is basically beer. So I had to make beer before I made beer. I know how a starter on a stir plate is designed to grow yeast cell counts, not good tasting beer. But I did some wyeast & white labs direct pitch, the beer did not suck. I wondered about yeast cells getting damaged when caught between the stir bar and the flask. I wondered about reports that yeast labs never used stir plates. Not just White...none of them do AFAIK. My own conclusion is that healthy, active yeast is more important than cell count.
|
|
|
Post by zymot on Mar 24, 2022 21:34:03 GMT -6
I think one hypothesis says that stir plates grow cell counts but they produce "walking wounded" yeast cells.
I recall multiple times homebrewers getting on a forum and cry how Whiter Labs,_Wyeast and other were a bunch of crooks because some pitching calculator said you needed more yeast than whet you got from a White Labs or Wyeast.
One of the few times I heard answer was that calculators are for repitching yeast White Labs & Wyeast are professional lab quality yeast. Not comparable.
The results I see from a SNS starter appear to support this concept.
|
|
|
Post by denny on Mar 25, 2022 14:06:21 GMT -6
I think one hypothesis says that stir plates grow cell counts but they produce "walking wounded" yeast cells. I recall multiple times homebrewers getting on a forum and cry how Whiter Labs,_Wyeast and other were a bunch of crooks because some pitching calculator said you needed more yeast than whet you got from a White Labs or Wyeast. One of the few times I heard answer was that calculators are for repitching yeast White Labs & Wyeast are professional lab quality yeast. Not comparable. The results I see from a SNS starter appear to support this concept. Yes, it's called "cell shear". Which is why shaker tables, not stir plates, are used to produce yeast. The yeast calculators are homebrewer constructs that may or may not have anything to do with reality. Which is why you see so much variability between them.
|
|
|
Post by drez on Mar 28, 2022 7:18:58 GMT -6
These days I mainly use dry yeast but when I do use a liquid strain I do this method. Have not used my stir plate in 5+ years. I think it is time to just throw it out.
|
|
|
Post by denny on Mar 28, 2022 13:38:45 GMT -6
These days I mainly use dry yeast but when I do use a liquid strain I do this method. Have not used my stir plate in 5+ years. I think it is time to just throw it out. I'd get rid of mine if I could find it
|
|
|
Post by brewbama on Mar 28, 2022 14:05:17 GMT -6
The grandkids found my stir plate in the basement and like to play with it so I’ll hang on to it for them.
Sent from my iPhone using Tapatalk
|
|
|
Post by Ken on Mar 28, 2022 15:08:01 GMT -6
Does anyone have a source for a 1-gallon glass jug like that? Does it have to be glass? I looked in some local stores and most things are smaller than 1-gallon and also plastic, not glass. I have several 64-ounce glass growlers. I will be making a starter for WLP940 some time in the next couple of weeks and I'll give this method a spin.
|
|
|
Post by gusso on Mar 28, 2022 16:41:10 GMT -6
I sometimes see apple juice in glass gallon bottles.
|
|
|
Post by gusso on Mar 28, 2022 16:44:17 GMT -6
Oh, and Carlo Rossi jug wine!
|
|
|
Post by Ken on Mar 29, 2022 7:32:24 GMT -6
Okay, but it should be GLASS, right? I assume plastic is frowned-upon. I also have an aluminum growler but again... only a half gallon.
|
|
|
Post by jimdkc on Mar 29, 2022 11:26:43 GMT -6
I don't see any reason it should be glass...
In fact, OP mentions a plastic jug.
|
|
|
Post by denny on Mar 30, 2022 13:15:31 GMT -6
Does anyone have a source for a 1-gallon glass jug like that? Does it have to be glass? I looked in some local stores and most things are smaller than 1-gallon and also plastic, not glass. I have several 64-ounce glass growlers. I will be making a starter for WLP940 some time in the next couple of weeks and I'll give this method a spin. No, it doesn't have to be glass. I just use an old apple use glass jug, so that may be an option for you. Remember, if you use 1 qt. of wort (recommended size) you need a 1 gal. container.
|
|
|
Post by denny on Mar 30, 2022 13:16:33 GMT -6
Okay, but it should be GLASS, right? I assume plastic is frowned-upon. I also have an aluminum growler but again... only a half gallon. Plastic is fine, with the usual plastic caveats.
|
|