New Giveaway - Wort Monster Conical Fermeneter!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Starters for 2.5 Gallon Batches?




Reply
 
LinkBack Thread Tools Display Modes
Old 03-24-2013, 12:38 AM   #1
maltoftheearth
Feedback Score: 0 reviews
 
maltoftheearth's Avatar
Recipes 
 
Join Date: Oct 2010
Location: Carthage, North Carolina
Posts: 487
Liked 11 Times on 9 Posts
Likes Given: 20

Default Starters for 2.5 Gallon Batches?

I saw in another thread someone suggest brewing 5 gallons of beer, splitting it into 2 batches of 2.5 gallons each and pitching a packet of yeast in each. I am accustomed to preparing a starter for every 5 gallon batch. Should I continue this practice with these smaller batchs? Or can I get away with pitching just one packet of yeast.

I anticipate OG being between 1.070 and 1.085.

Maybe as a general rule, is the need for a starter simply compensating for the alcohol level or does volume play a role as well?



__________________

Long range forecast:

5G Carboy Primary (1):
5G Carboy Primary (2):
2.5G Carboy Primary:

Kegged: alt, Belgo Clone Wars, Salt n' Peppa IPA, Slip One to the Porter, Russian Oligarch Stout, Rye Around Sally IPA, California Commoner, No Fail Cream Ale.

maltoftheearth is offline
 
Reply With Quote Quick reply to this message
Old 03-24-2013, 12:41 AM   #2
Ryush806
Feedback Score: 0 reviews
 
Ryush806's Avatar
Recipes 
 
Join Date: Sep 2010
Location: Shreveport, Louisiana
Posts: 769
Liked 87 Times on 62 Posts
Likes Given: 21

Default

I'd suggest using mrmalty.com or yeastcalc.com to calculate the amount of yeast you would need. I imagine for most brews around 5% you could just use one pack of yeast.



__________________

Beer is proof that God loves us and wants us to be happy.
- Benjamin Franklin (and I don't care if this quote has been largely discredited/misquoted...I like it!)

Beer, if drank with moderation, softens the temper, cheers the spirit and promotes health.
- Thomas Jefferson

Ryush806 is offline
 
Reply With Quote Quick reply to this message
Old 03-24-2013, 07:37 AM   #3
el_caro
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: , Australia
Posts: 598
Liked 33 Times on 28 Posts
Likes Given: 8

Default

Quote:
Originally Posted by maltoftheearth View Post

Maybe as a general rule, is the need for a starter simply compensating for the alcohol level or does volume play a role as well?
Volume and OG play important parts in the calculation of the yeast pitching amount. Starters also proof the yeast if using liquid yeast but are not required or recommended for dry yeast.
You will need around 15g of dry yeast for 1.085 OG but could probably get away with one 11.5gm pack provided you rehydrate as per instructions. If you do not rehydrate you will lose up to 50% of the yeast and that will definitely result in under-pitching I suspect.
__________________
el_caro is offline
 
Reply With Quote Quick reply to this message
Old 03-24-2013, 03:20 PM   #4
HerbieHowells
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2011
Location: Denver, CO
Posts: 345
Liked 30 Times on 28 Posts
Likes Given: 2

Default

Age of the yeast matters as well. I do lots of smaller batches, and always run them through Mr Malty. One pack without a starter may be enough if you are using fresh yeast, but if it is two months old, you will need a starter for a 2.5 gallon batch.

Long story short, you are dealing with living organisms, so it's better to treat each batch individually rather than than looking for hard and fast rules.

__________________
HerbieHowells is offline
 
Reply With Quote Quick reply to this message
Old 03-24-2013, 04:29 PM   #5
fatnoah
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2012
Location: Chicago, IL
Posts: 140
Liked 14 Times on 14 Posts

Default

I do 2.5gal batches and learned the hard way that you still should do a starter for liquid yeast. It isn't so much to get more yeast growth but more to make sure it is healthy. For most moderate gravity beers the amount of yeast in a liquid pack/tube is fine for a 2.5 gal batch so you just need a small starter like 1L.

Dry yeast? I just throw the whole sachet in there. Even if 50% do die you still have plenty of yeast. Never had any issues with dry.



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


Quick Reply
Message:
Options
Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
5 Gallon Batches in Blichmann 55 Gallon Boilermaker adamjackson Beginners Beer Brewing Forum 12 08-03-2012 07:53 PM
Stir plate starters for 10 gal batches? Beavdowg Fermentation & Yeast 8 05-26-2011 06:45 PM
90-100 Gallon Batches-Washed slurries or starters? LastStop Fermentation & Yeast 2 08-03-2010 01:05 AM
Minimum burner BTU - 10 gallon batches in 15.5 gallon keggle schneemann Equipment/Sanitation 21 10-27-2009 04:01 PM
Mutliple Starters/Batches Stubru All Grain & Partial Mash Brewing 11 08-18-2008 03:57 PM