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Old 09-24-2008, 08:27 PM   #1
Sep 2008
Garland, TX
Posts: 426
Liked 1 Times on 1 Posts

I visited Austin Home Brew Supply last Sunday while I was in Austin (nice folks) and picked up their Holiday Ale kit. I am an all extract kinda brewer for 6 years running, but decided to dip my toe into partial mashing as this batch is for friends and family and I want a better brew for them. Long story short, my OG is a bit off from their target range of 1.051. Mine ended up 1.044 at 70 degrees when I took the reading. I am not complaining one bit - I just want to get better at this as it was not as hard as I imagined a partial mash would be and I want to continue down this path.

My setup - 5 gallon igloo round water cooler (it actually holds temps very stable for the 45 minutes needed), 2 lbs. 2-row, 1 lb crystal 40, 1/2 lb. white wheat, 1/4 lb. chocolate, and 5 lbs. of extra pale LME. I heated the 2 gallons of mash water (bottled spring water) up to 170 thinking the cooler would drop that some, but in checking my sterilized floating thermometer I left in there I was sitting at 168 after a 45 minute soak. Is this too high? I added about 2 tbs. of phosphoric acid to the mash water per AHBS recommendation. Sparged with 2 quarts of 170 degree water and let the grains drain in a strainer over the pot. Added the 5 lbs. of LME and proceeded as normal.

Any tips to why my OG was a tad low and how to increase efficiency with my setup? It was actually pretty fun and more painless than I imagined. Not sure why I waited 6 years before I tried it.


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Old 09-24-2008, 08:30 PM   #2
Maniacally Malty
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Apr 2007
Oakland, CA
Posts: 21,790
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that is far too high a mash. you want to mash in the low 150s.

you should increase your sparge to an additional 2 gallons. this would also help with efficiency.

check out the thread in my sig, too. it might help clear things up.
Easy Partial Mash Brewing - Stovetop All-Grain Brewing

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Old 09-25-2008, 04:03 AM   #3
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Jun 2007
La Puente, CA, California
Posts: 2,164
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Read this.........

How to Brew - By John Palmer - Partial Mash Option

Fermentor 1: Bill's House Ale II, Fermentor 2: German Helles, Fermentor 3: Bill's Schworzbier (Black Bier)
Tap 1: Bill's House Ale II, Tap 2: German Hefewizen, Tap 3: Nut Brown Ale
Future Brews: Stone IPA Clone, Blonde Ale, Budvar Clone, Newcastle Clone
New toy: Blichmann 27 gallon fermentor

“If you find yourself in a hole, the first thing to do is stop digging”

“Good judgment comes from experience, and a lotta that comes from bad judgment”

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