Ss Brewing Technologies Giveaway!

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Very Low OG and FG - what happened?
Reply
 
LinkBack Thread Tools
Old 12-06-2011, 07:39 PM   #1
inkman15
Feedback Score: 1 reviews
Recipes 
 
Join Date: Jan 2011
Location: West Orange, NJ
Posts: 226
Liked 8 Times on 7 Posts
Likes Given: 1

Default Very Low OG and FG - what happened?

I brewed a pumpkin ale about 3 weeks ago with the following recipe:

8 lbs Marris Otter (3 SRM)
.5 lbs Caramel/Crystal Malt - 40L (40.0 SRM)
.5 lbs Caramel/Crystal Malt - 80L (80.0 SRM)
.5 lbs Victory Malt (25.0 SRM)
3 lbs Pumpkin, baked (added to mash)
1 lbs rice hulls (added to mash)
2 oz Hallertauer (4.8%) - Boil (60 min)

Spice mix (flame out)
1/2 tsp cinnamon
1/4 tsp Ginger
1/8 tsp Nutmeg
1/8 tsp Allspice

Estimated OG 1.049
33.7 IBU
10.3 SRM

I sparged with the instructions from the Bee Cave Brewery Haus Pale Ale (which I've brewed before and was generally successful):

Quote:
Single Infusion mash for 60 minutes at 152 degrees.
I batch sparge in a 10 gallon water cooler with a stainless braid manifold. Click here for great info on Batch Sparging.
Dough-in with 3.5 gallons of water. After 60 minutes, add 5 quarts of 175 degree water and begin vorlauf. My system only takes about 2 quarts before it clears up, then it's wide open to drain in the kettle. Have another 3.25 gallons of 175 degree water ready for the next batch sparge. You should then get 6.5 gallons to your kettle for the boil.
Unfortunately, my OG was 1.032 when I took a reading before fermentation. I let it sit for 3 weeks and yesterday cracked it open to bottle. My FG ended up being 1.010. So, I'm looking at a 2.89% ABV beer. Ugh.

I'm not really sure what happened here. My setup is a propane burner with a 10-gal cooler mash tun. Following my initial low gravity, I did a test with my mash tun for temperature. I filled it up with hot water and let it sit for an hour. It didn't lose 1 degree of heat.

Was it a bad crush?
__________________

Primary: Mosaic SMaSH, Chocolate Oatmeal Porter
Drinking: Centennial Blonde, Citra SMaSH, Crystal Ave IIPA

inkman15 is offline
 
Reply With Quote Quick reply to this message
Old 12-06-2011, 07:48 PM   #2
ciphin78
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2011
Location: St. Louis, MO
Posts: 114
Liked 16 Times on 7 Posts
Likes Given: 3

Default

It could be a bad crush.

You could validate your thermometer is giving you correct readings. I had one that was consistently 10 degrees off and was getting crappy conversions. I got a new one and my efficiency shot back up.

__________________
ciphin78 is offline
 
Reply With Quote Quick reply to this message
Old 12-06-2011, 07:50 PM   #3
david_42
Feedback Score: 0 reviews
 
david_42's Avatar
Recipes 
 
Join Date: Oct 2005
Location: Willamina & Oak Grove, Oregon, USA
Posts: 25,651
Liked 133 Times on 126 Posts

Default

Crush or temperature.

Look at it this way, you have a spiced pumpkin session beer that you can guzzle all day watching football and not get too blasted.

__________________

Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"

"I would like to die on Mars, just not on impact." Elon Musk

david_42 is offline
 
Reply With Quote Quick reply to this message
Old 12-06-2011, 08:03 PM   #4
inkman15
Feedback Score: 1 reviews
Recipes 
 
Join Date: Jan 2011
Location: West Orange, NJ
Posts: 226
Liked 8 Times on 7 Posts
Likes Given: 1

Default

Hadn't really considered the thermometer but that's a very good possibility. Any recommendations for a GOOD thermometer?

__________________

Primary: Mosaic SMaSH, Chocolate Oatmeal Porter
Drinking: Centennial Blonde, Citra SMaSH, Crystal Ave IIPA

inkman15 is offline
 
Reply With Quote Quick reply to this message
Old 12-06-2011, 09:00 PM   #5
ciphin78
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2011
Location: St. Louis, MO
Posts: 114
Liked 16 Times on 7 Posts
Likes Given: 3

Default

I'm sure there are a bunch. I use a basic digital candy/oil thermometer, however I would like to get an instant read in the future.

__________________
ciphin78 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
What happened?!?!? Cwetherford Beginners Beer Brewing Forum 17 07-14-2011 09:52 PM
My OG was way off. What could have happened? mikeinternet Beginners Beer Brewing Forum 8 01-12-2010 09:45 PM
What happened to my OG? Jeeperforlife Beginners Beer Brewing Forum 9 12-25-2009 08:59 AM
What happened? Fishin-Jay Beginners Beer Brewing Forum 12 12-19-2009 04:22 AM
what happened? hostileNabusive Beginners Beer Brewing Forum 11 04-08-2008 12:05 AM