Happy HolidaySs Giveaway - Last Sponsor Giveaway of the Year!

Come Enter the BrewDeals/FastFerment Giveaway!


Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Stir Plate Question
Reply
 
LinkBack Thread Tools
Old 06-04-2013, 07:30 PM   #1
dyennie
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2011
Location: chesapeake, va
Posts: 73
Liked 15 Times on 9 Posts

Default Stir Plate Question

I am going to start making and using starters. I understand that stir plates will help to make more healthy yeast. So the question is how to properly use a stir plate??? After pitching the yeast into the flask do I need to turn the stir plate to make a vortex and keep it on until I am ready to pitch the yeast in the wort???

__________________
dyennie is offline
 
Reply With Quote Quick reply to this message
Old 06-04-2013, 07:46 PM   #2
stpug
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2012
Posts: 2,490
Liked 358 Times on 313 Posts
Likes Given: 167

Default

Generually speaking, you should spin the yeast until either:
1) It's at high krausen (~18 hrs or when foam is at it's highest) and you're ready to pitch the entire contents directly from the stir plate.
2) It's finished the stir plant (24-48 hrs) and been crash cooled for a day or two.

The vortex isn't as important as keeping the yeast suspended and not throwing the stirbar, but, yes, the stir plate will be running the entire time (18-48 hours).

__________________
:: St. Pug ::
stpug is offline
 
Reply With Quote Quick reply to this message
Old 06-04-2013, 07:51 PM   #3
BigFloyd
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
BigFloyd's Avatar
Recipes 
 
Join Date: Dec 2012
Location: Tyler, Texas
Posts: 4,806
Liked 628 Times on 549 Posts
Likes Given: 575

Default

Quote:
Originally Posted by dyennie View Post
After pitching the yeast into the flask do I need to turn the stir plate to make a vortex and keep it on until I am ready to pitch the yeast in the wort???

I typically keep the flask on the stir plate about 20-24 hours unless I'm stepping it up to a larger size starter. After the 20-24 hrs has passed, I'll cold crash it 1-3 days depending on my brew schedule. You can also pitch the whole thing w/o crashing if you're ready for it right then.

I spin it fast enough to get a small dimple on the surface. That's it. You just want to keep it moving, not use the thing as a blender.
__________________
Good Temp Control -----> Happy Yeast ------> Tasty Brew
BigFloyd is offline
 
Reply With Quote Quick reply to this message
Old 06-04-2013, 09:34 PM   #4
dyennie
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2011
Location: chesapeake, va
Posts: 73
Liked 15 Times on 9 Posts

Default

Awsome, Thanks for the replies and information.

__________________
dyennie is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2013, 01:25 AM   #5
blkandrust
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Location: Harrisonburg, Va
Posts: 396
Liked 8 Times on 7 Posts
Likes Given: 2

Default

+1 on room temp and stir plate.

__________________

Lady Astor-"If you were my husband,I would poison your drink"

Winston Churchill-"If you were my wife,I'd drink it"

blkandrust is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2013, 01:31 AM   #6
Pratzie
HBT_LIFETIMESUPPORTER.png
Feedback Score: 1 reviews
 
Pratzie's Avatar
Recipes 
 
Join Date: Sep 2012
Location: Northeastern Pennsylvania
Posts: 1,549
Liked 153 Times on 108 Posts
Likes Given: 112

Default

http://www.stirstarters.com/

highly recommend checking this guy out. A bit on the expensive side but it has a lifetime warranty and alot of people on here have gotten their stir plates from him. Anyone that had a question or an issue with their plate basically received brand new starters in the mail from him. he also includes a stir bar and a magnet that u keep on the outside of ur vessel that attracts the stir bar to the side and keeps it from going into ur wort when u pitch.
__________________
Bottled: Nothing :(
Kegged: Nothing :(
Primary: Empty
Secondary: Empty
Aging:
On Deck: Deception Cream Stout, BierMuncher's Centennial Blonde, Yooper's Oatmeal Stout, Joe's Ancient Orange Mead, Reaper's Mild
Pratzie is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2013, 05:33 AM   #7
blazin
HBT_SUPPORTER.png
Feedback Score: 1 reviews
Recipes 
 
Join Date: Apr 2010
Location: NJ
Posts: 54
Liked 2 Times on 2 Posts

Default

I always try to pitch when the yeast is actively fermenting, not after it has settled out.

For a small starter (<2L for 5.5 gallon batch) I will time my starter to pitch at high krausen (~18 hrs in) with the starter on the stir plate the whole time.

For larger starters (>2L for 5.5 gallon batch) I use a slightly more involved process in order to pitch actively fermenting yeast without pitching a huge volume of unhopped oxidized starter wort into my fermentor:

First I build up a starter with a bit less than what my target starter volume is (I use the Mr. Malty calculator). For instance if the calculator said I needed a 3.5L starter I will make a 3 liter starter.

I ferment this on the stir plate until it is done (usually around 48 hours)

Then I take it off the stir plate and cool crash it to drop the yeast out.

18-24 hours before I plan to pitch my yeast I decant off the original starter liquid and add 1L of fresh oxygenated starter wort and throw the whole thing back on the stir plate.

With this method I am able to essentially concentrate a 3.5L starter worth of yeast into 1L of active starter.

This method has worked great for me on light lagers that require huge amounts of yeast but are also very susceptible to off flavors that could potentially be introduced by a large volume of starter liquid.

__________________
blazin is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Re: Stir Plate Question. . . . . brewzofo1 DIY Projects 16 07-06-2012 08:18 PM
Stir Plate question DieterVonBrauhaus Chillers and Stir Plates 35 02-24-2012 07:24 PM
used stir plate question Donner Chillers and Stir Plates 6 05-09-2011 02:42 AM
Stir Plate Fan Question yerffejecarb Chillers and Stir Plates 6 11-22-2010 09:21 PM
Stir plate question LKHA Chillers and Stir Plates 2 02-14-2010 08:13 PM



Newest Threads

LATEST SPONSOR DEALS