Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > First All Grain Brew Problems
Reply
 
Thread Tools
Old 10-17-2011, 02:12 PM   #1
GatorBeer
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2010
Location: Gainesville, FL
Posts: 131
Liked 9 Times on 6 Posts
Likes Given: 2

Default First All Grain Brew Problems

So I did my first all-grain brew yesterday and it didn't go quite as planned. Target OG 1.052
Pre boil OG 1.034
Post boil OG 1.042.

I missed the OG quite badly and I think it could be one of two reasons. I am using a 7 gallon round cooler, so when my grain and mash water are combined, they fill the cooler up. I'm thinking this is going to effect my sugar extraction? Also, I was only able to get my mash temp to 142-145F because I couldn't add more hot water due to size restrictions.

Lastly, I only got 4-4.5 gallons after my boil. I don't know how, because it started with 6.5 gallons. Is there such a thing as boiling too vigorously? I boiled for an hour on a bayou classic propane burner.

*Recipe*
60 minute mash @152
10 lb rahr 2 row
.75 lb briess rcaramel 60

1 oz chinook (45 min)
.75 oz perle (20 min)
2 oz cascade (0 min)


GatorBeer is offline
 
Reply With Quote
Old 10-17-2011, 02:27 PM   #2
krenshaw
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
krenshaw's Avatar
Recipes 
 
Join Date: Dec 2010
Location: Lancaster, PA
Posts: 1,105
Liked 48 Times on 44 Posts
Likes Given: 28

Default

my first all grain did about the same.. was about the same if not more off of my OG and had a little less than expected..

the biggest thing that helped me was to preheat my mash tun.. and not just splash some water in there, i heat a bit more in my HLT and about 10 min before dough-in i fill up about 2 gallons in my mash tun, stick the lid on, and let it sit.. then just before i add the grains i open it up and swish it around to get the upper parts better.. that in itself probably fixed my first allgrain from 50% to 60%..

also making sure you mashed the full required time at the right temp is a big help too.. even preheating your mastun its good to add the water a couple degrees higher than you want to rest it at as the room-temp grains will quickly drop it a couple degrees..

those are just my 2 cents, i'm sure people who have been doing it longer would help better, and i can take some notes as well


__________________
~ A fine beer may be judged with only one sip, but it's better to be thoroughly sure.

DOWN THE HATCH BREWING
Stainless Hop Spider | Wooden Brew Rig | Dual Hinge Keezer Build

Primaries: Apfelwein, Nugget Nectar, Brinner, Sticky Red, Smoked IPA
Keg 1: Nugget Nectar Clone | Keg 2: Brinner | Keg 3: Oaked Bourbon Vanilla Porter
Bottles: lots full and even more empty
krenshaw is offline
 
Reply With Quote
Old 10-17-2011, 02:28 PM   #3
bmick
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2011
Location: New York, NY
Posts: 324
Liked 26 Times on 16 Posts
Likes Given: 2

Default

Ok, I don't want to sound mean, but it sounds like you need to read up a bit on the AG process before your next batch. Things like mash thickness (1.25qt mash water/ lb of grain), strike tempurature (usually 10-12 degrees F above your mash temp), and sparging method (batch or fly), are all things that need to be carefully considered before each brew. It's not as hard as it sounds, it's pretty easy, but if you haven't looked at it before, you'd never think of all these things. There are some great threads (a few of the stickies here too) that can give you a good background on AG before the next batch. Cheers.
bmick is offline
 
Reply With Quote
Old 10-17-2011, 02:29 PM   #4
HomebrewMTB
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2008
Location: Raleigh, NC
Posts: 408
Liked 10 Times on 10 Posts

Default

You cooler is fine. Less space empty is better. You should start with hotter water than your strike temperature and start a little thicker (~1 qt per lbs) so you can add water to adjust your temp without overfilling. Start with water like 185 degrees, let it set in the cooler. The cooler will absorb some temp heating up. Then stir and adjust your water until you hit strike temps. Mix in your grains and keep stirring until you hit your mash temps.

You can have too vigorous a boil. It's a waste of gas. It could be your pot/kettle though. Although you can compensate with more sparge water if needed to end up with your post boil volume.
HomebrewMTB is offline
 
Reply With Quote
Old 10-17-2011, 02:35 PM   #5
GatorBeer
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2010
Location: Gainesville, FL
Posts: 131
Liked 9 Times on 6 Posts
Likes Given: 2

Default

I used 2 qts/lb, as per what I read in the sample 'first time all grain brewing' section in How to Brew, I guess I can lower that. I preheated my tun, but with only ~.5 gallon, I will use more next time. My strike water was at 160, but once it hit the grain it dropped to about 142 and I had to add about .5 gallons of boiling water to get it up to 145.
GatorBeer is offline
 
Reply With Quote
Old 10-17-2011, 02:39 PM   #6
JRems
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2010
Location: Mahopac, NY
Posts: 2,230
Liked 60 Times on 52 Posts
Likes Given: 9

Default

The problem was probably your temperature. For 11 pounds of grain you should use close to 4 gal of strike water at about 162-165 to land near 152. I use a 7 gal cooler too and you should not have any problem at all fitting 4 gal and the grain in. You will probably get about 2 - 2 1/2 gal out then sparge with 5-6 gal at 170. I need about 8 gal in the kettle to get 6 gal after a 90 min boil. I usually leave about 1/2 gal in the kettle because it is full of trub and get 5.5 gal in the fermenter.
JRems is offline
 
Reply With Quote
Old 10-17-2011, 02:43 PM   #7
GatorBeer
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2010
Location: Gainesville, FL
Posts: 131
Liked 9 Times on 6 Posts
Likes Given: 2

Default

I appreciate all the help. I'm going to use a little less water at a higher temperature next time for the mash and preheat it well. Cheers!
GatorBeer is offline
 
Reply With Quote
Old 10-18-2011, 12:35 AM   #8
1MadScientist
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2011
Location: Panhandle of Florida, USA
Posts: 510
Liked 31 Times on 25 Posts
Likes Given: 22

Default

Congratulations on your first AG. You will zero in on your numbers after a few more times.

I would say this about your evaporation rate question, is I had a 2 gallon+ loss using a 10 gallon MegaPot here in Florida consistently...just factor it in. Flame wasn't over killed either. You can see this setup on my Flickr photos dated 10/09/2010.


__________________
In Cat Beers - I've Only Had One

BIABrewer.info / Closed-system pressurized fermentation technique

Brewing with MS; http://www.flickr.com/photos/madscie...473769/detail/
1MadScientist is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
First all-grain...problems, problems, problems. Q2XL All Grain & Partial Mash Brewing 30 09-13-2013 11:02 PM
pre rinsing grain, any problems with that? sivrat All Grain & Partial Mash Brewing 8 09-12-2011 06:09 PM
new to all grain - having some problems mleary All Grain & Partial Mash Brewing 20 01-10-2011 08:55 PM
First All Grain. MLT problems. WenValley All Grain & Partial Mash Brewing 10 07-30-2009 11:19 PM
All Grain #2 - Problems... ColoradoXJ13 All Grain & Partial Mash Brewing 4 03-19-2007 11:29 PM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS