Spike Brewing 12.5 Conical Fermenter Giveaway!

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > BIAB Brewing > BIAB Brewing (with pics)

Reply
 
LinkBack Thread Tools
Old 06-10-2011, 12:55 AM   #171
EoinMag
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2008
Location: Dublin, Ireland.
Posts: 1,178
Liked 60 Times on 39 Posts
Likes Given: 58

Default

Quote:
Originally Posted by seabass07 View Post
From a little research, it looks like a sour mash is used to bring the mash ph down to 5.2. In that case, there's definitely no issue with aluminum.

But remember that aluminum does not like star san.
My point was that if star san is killing all germs (effectively) at 3-3.5 then there was no chance that a sour mash was that low as it contains germs.
__________________
http://beernvictuals.blogspot.com/20...rters-and.html
http://beernvictuals.blogspot.com

You didn't say you didn't love me, when you were stretched out across my bed
You're drinkin' moonshine whisky and talking all outta your head.
Rory Gallagher - Pistol Slapper Blues (Trad)
EoinMag is offline
 
Reply With Quote Quick reply to this message
Old 06-10-2011, 01:24 AM   #172
seabass07
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
seabass07's Avatar
Recipes 
 
Join Date: Apr 2011
Location: Brothell
Posts: 1,243
Liked 114 Times on 89 Posts
Likes Given: 70

Default

Quote:
Originally Posted by EoinMag View Post
My point was that if star san is killing all germs (effectively) at 3-3.5 then there was no chance that a sour mash was that low as it contains germs.
__________________
seabass07 is offline
 
Reply With Quote Quick reply to this message
Old 06-10-2011, 09:14 PM   #173
derpsperk
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2010
Location: Seattle
Posts: 14
Default

Thanks for the replies. I've been considering trying a sour mash for a while, but was a bit nervous doing it in my BIAB set-up... Sounds like it shouldn't be an issue, huzzah!

__________________
derpsperk is offline
 
Reply With Quote Quick reply to this message
Old 06-25-2011, 04:37 PM   #174
pauswa
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2011
Location: Lake Elsinore, CA
Posts: 26
Liked 1 Times on 1 Posts

Default

For my BIAB I only do 2½-gallon batches and I do it on my stovetop. I mash in a 4-gallon pot. With Maris Otter malt I get about 75% efficiency. I do the mashout as described. Also, if you end up short on the liquid because the grains absorbed too much or you didn't measure right, just add some water before the boil. The grains are very forgiving. The lowest efficiency I ever got was 70%, so you can't go wrong. The thing I noticed doing this method is that the wort is all first runnings, so it's very dark and thick and smells delicious and sweet! In the room where the fermenter is kept, the entire room has a delicious malt smell. I do not ever get this strong and wonderful a smell from extract. This is because the wort is so wonderfully FRESH.

__________________
pauswa is offline
 
Reply With Quote Quick reply to this message
Old 06-26-2011, 01:30 PM   #175
oldtrucker
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2009
Location: Marion, La.
Posts: 24
Liked 1 Times on 1 Posts

Default

How many pounds of grain will a gallon hold?
Old Trucker

__________________
oldtrucker is offline
 
Reply With Quote Quick reply to this message
Old 06-26-2011, 03:08 PM   #176
Rivenin
Feedback Score: 1 reviews
Recipes 
 
Join Date: Dec 2010
Location: Portland, Oregon
Posts: 2,574
Liked 174 Times on 140 Posts
Likes Given: 93

Default

huh?

__________________
RAINYDAY BREWING AND WINERY Southeast Portland, OR - EST 2010
Primary Straight lambic - Nelson Sauvin honey Blonde
Kegged NZ/USA IPA - Mosaic Honey Wheat
Coming up Cream ale - Bitter - Porter
Electric 120v Brutus 20
Rivenin is offline
 
Reply With Quote Quick reply to this message
Old 06-26-2011, 07:28 PM   #177
Mysticmead
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: Kingston, GA
Posts: 1,255
Liked 70 Times on 51 Posts
Likes Given: 106

Default

Quote:
Originally Posted by oldtrucker View Post
How many pounds of grain will a gallon hold?
Old Trucker
http://www.rackers.org/calcs.shtml
__________________
Mysticmead is offline
 
Reply With Quote Quick reply to this message
Old 06-30-2011, 04:51 PM   #178
Wingfan13
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
Wingfan13's Avatar
Recipes 
 
Join Date: Sep 2010
Location: Austin, TX, Texas
Posts: 333
Liked 5 Times on 5 Posts
Likes Given: 3

Default

Quick question and I am sure it is a stupid one. I am new to BIAB and I am trying to do half batches. 2.5 gallons. I have only been following recipes in the 10 or so 5 gallon batches I have brewed so I am unclear on how to caculate how much water I need to start the mash and moving into the boil.

I have read 1.25 quarts per pound of grain. Then I need to add boil off and grain absorption. Is this correct ? What is the easiest way to calculate grain absorption ?

Boil off seems to be something I need to test on my own by boiling for an hour and seeing how much is left. To test this, can I just thrown 3 gallons of water into my pot, boil for 60min and measure ? using that as an estimate ?

Thanks for the help. I am still learning.

__________________
Wingfan13 is offline
 
Reply With Quote Quick reply to this message
Old 06-30-2011, 05:01 PM   #179
Wingfan13
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
Wingfan13's Avatar
Recipes 
 
Join Date: Sep 2010
Location: Austin, TX, Texas
Posts: 333
Liked 5 Times on 5 Posts
Likes Given: 3

Default

Here is how I am looking at it and please let me know if I am off.

I have a recipe that uses 13.4 pounds of grain. If I cut that in half it is 6.7 pounds of grain.

6.7 pounds of grain
x 1.25 = 8.375 quarts which is 2.09 gallons

2.09 gallons
+ 1 gallon for boil off (looked this up as an good starting point)
+ .1 gallon per pound of grain (also looked this up as a starting point) = .67 gallons

I would need 3.76 gallons to start ? Does this look right ?

Thanks for the help !

__________________
Wingfan13 is offline
 
Reply With Quote Quick reply to this message
Old 06-30-2011, 05:29 PM   #180
bovinejony
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2011
Location: Pasadena, California
Posts: 46
Liked 2 Times on 2 Posts

Default

Quote:
Originally Posted by Wingfan13 View Post
Here is how I am looking at it and please let me know if I am off.

I have a recipe that uses 13.4 pounds of grain. If I cut that in half it is 6.7 pounds of grain.

6.7 pounds of grain
x 1.25 = 8.375 quarts which is 2.09 gallons

2.09 gallons
+ 1 gallon for boil off (looked this up as an good starting point)
+ .1 gallon per pound of grain (also looked this up as a starting point) = .67 gallons

I would need 3.76 gallons to start ? Does this look right ?

Thanks for the help !
The .1 gallon/lb grain is going to be lost from your strike volume, so if you strike with 2.09 gallons you will lose 0.67 gallons of volume (=1.42 gallons).

Now if you want to do a sparge here, you can use whatever volume you want that will raise the 1.42 gallons to the total volume you want pre-boil.

So say you boil off 1 gallon/hour in your kettle, then you can sparge with 2.08 gallons to get 3.50 gallons pre-boil total volume, and then start your 60min boil to get it down to 2.5 gallons post-boil.

Or you can be lazy like me and just make a calibrated stick with notches for gallon measurements specific to your kettle. Then just estimate the amount of water and boil it all down till you get to your desired pre-boil volume. Some say extended boils cause carmelization, yada yada, but it's worth it to me.
__________________
bovinejony 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
Another first BIAB stunsm BIAB Brewing 12 03-17-2013 09:35 PM
Anyone BIAB? ultravista All Grain & Partial Mash Brewing 72 08-31-2012 12:50 AM
1st AG, 1st BIAB results w/ pics mattmcl All Grain & Partial Mash Brewing 4 09-13-2011 01:48 AM
A nice Podcast on BIAB from one of the Pioneers of BIAB gunner65 All Grain & Partial Mash Brewing 0 02-26-2011 12:24 AM
Brew day - brewing a duvel clone! (pics attached) Steve973 All Grain & Partial Mash Brewing 2 01-22-2007 01:29 PM