19 February 2010

Stuck Sprarges Begone: Improved Homemade Mash Tun

I previously posted about the construction of my homemade mash tun.  However, I got stuck sparges with my first two uses (one and two).  The culprit, seemingly, was the the piece of PEX I was using to filter the wort from the grain.  It just wasn't porous enough to keep things running smoothly. Rather than drilling a bunch more tiny holes, I decided to take the route praised by many and I used a stainless steel braid from a sink hook-up.  All that needs to be done is the removal of the end fittings (angle grinder) and then the removal of the inner hose.  I found the hose removal to be difficult and finally got it to work while using a vice clamp to hold the hose and a milking technique to remove the braid.  I used plastic T and stainless hose clamps to finish the loop. I joined the loop to a nub of PEX (via brute force), as the PEX fits perfectly in bulk head.  I have used it twice now with great success.  Woo hoo.

13 February 2010

Freaking the Funk: My First Homebrew Sour Mash - Kentucky Common Beer



My favorite beers are those that are described as wild / sour. Recently, I was reading about about an  American style of beer, the Kentucky Common,  which is a sour brown ale.  Once I read that it was sour and old-timey (popular pre-prohibition) I knew I needed to brew it. This need to brew the KY Common was amplified recently when I sampled some (unsour) American browns, a style I never appreciated before.  To elicit the sourness for this beer I decided to employ a sour mash. Basically lactobacillus and other micro-critters are just chilling on the grain. and the usual mash and boil technique does not favor their survival.  However, given the right conditions you too can grow your own pot of mold. 

Sour Mash:
I made some wort from 1.5 lbs of grain. I let the mash sit covered over night, sparged in the morning and then threw in 3 oz of uncrushed malt. Since then I've been keeping it at about 90F. These photos (w and w/o flash) are of about 50 hours into the souring.  I think this whitish mat sitting atop of the wort is Lactobacillus culture/colony?. At about only 8 hours in it didn't smell so good. Now, while stronger, it also smells better (familiar) and more like a Berliner Weisse I brewed with a pure lactobacillus culture.

I haven't quite decided how long to freak the funk. I am also unsure if I should throw out the whitish mat, or throw it in with the rest of the unsoured mash on brew day.


10 February 2010

2nd All Grain Homebrew: Vienna Lager

Second All Grain Brew.

After some of the *ahem* hiccups with my first all grain brew (cream ale 1/24/10) I went it at a week later 1/31/2010 and brewed my first lager (vienna lager). I upgraded from the seemingly ineffectual pex filter in my mash tun.
This time I used the often lauded stainless steel braid, and after struggling with the pliers and the finger-cuff-like action I switched to a vice clamp with a milking action.

Given my 20 point miss the first time around, I used a grain bill with a slightly higher than style estimated OG. The estimated OG was 1.058. I had no problems with the lautering. I also collected the correct amount of wort this time. Previously I has messed up the volumes somehow. I realize now, that I should really do an actual job of determining the volumes in my kettle and bucket. I am still educated guessing it. So knowing the volumes for real would be smart. I'll get out the measuring stick soon.

For the single infusion mash I aimed for 60 minutes @ 152F. I think it might have ended up starting closer to 150F and then falling during the rest. The pre-boil OG was 1.060. The post boil after I added the water to get to my estimated 5.25 gallons was 1.050. I was 8 points off, but now within the style guidelines. I was quite happy with this improvement.

I aerated via aquarium pump for about an hour and pitched a 1 liter stepped to 3 liter starter of Wyeast Octoberfest 2633. I pitched at 52 degrees.

My recipe:

5.00 lb Vienna Malt (3.5 SRM) Grain 44.76 %
3.04 lb Pilsner (2 Row) Ger (2.0 SRM) Grain 27.22 %
3.00 lb Munich Malt (9.0 SRM) Grain 26.86 %
0.13 lb Carafa II (412.0 SRM) Grain 1.16 %
1.00 oz Liberty [4.30 %] (60 min) Hops 12.3 IBU
0.30 oz Sterling [6.00 %] (30 min) Hops 4.0 IBU
0.50 oz Hallertau Select [1.50%] Hops 0.8 IBU
octoberfest (Wyeast) Yeast-Lager

01 February 2010

My first all grain experiece - I missed the OG by 20 gravity points and had a stuck sparge


I brewed a cream ale on 1/24/2009
 I recently brewed my first all grain batch.  It was also the first time I used my barley crusher.  It was the second time I made a starter and the second time I used my mash tun.  It’s a cream ale. I crushed the grain (default gap).  I placed the grain in the mash tun, ( modified 48 qt igloo xtreme cooler).  I did a 90 min single-infusion mash at 149˚ for 90 minutes.   I sparged (sort of). I collected about 4 gallons of wort. I added water to 4.65 gallons in my 5.25 gallon kettle. I boiled for 90 minutes. I used and immersion chiller and an ice bath to get temperature to 60˚. I then poured the wort through a strainer into the fermenting bucket.  I aerated with an aquarium pump with an inline filter for 40 minutes.  I pitched all of an 800 ml starter (1056) that was about 16 hours past full krausen. That’s about as positive as I can be about this brew. 
Some issues arose.  Firstly, I had to clean all the metal filings off the barley crusher, which I hadn’t anticipated. I wasn’t quite sure how to do this and I used compressed air and ‘pre-crush’ of a few ounces of grain that I then tossed.  Then, my temperature may have been messed up in the mash. Thermometer issues (now resolved).  But I for sure added 11 quarts of 161 degree water to 8.25 pounds of 67-68 degree grain.  Then I added more water at 185˚ to mash out.  I began to drain and then my mash was stuck, (again 2 for 2 uses, first time was a faulty plug which caused grain to get lodged in the ball valve) I got like 8 oz out before that happened.  Though I might have sparged wrong.  The idea as I now understand it is slow and steady until clear and then continue, then add sparge water and let sit for 10-15 minutes and then repeat. I guess I was little too excited and forgetful of previous research on the matter.  I probably added more than warranted ‘mash out’ water, mixed the grains up and didn’t wait long enough before becoming all willy nilly on the valve.  So the sparge was stuck. I picked up the tun and poured it through a strainer into the kettle. I poured the sparge water over the grain in the strainer.  My gravity reading was 1.028. Yup, 21 points below expected.  I then maybe boiled a pound of DME and 12 more ounce of sugar and added it to the bucket after it cooled, maybe. The (visible) fermentation started after this addition ~ 48 hours in.  
 Um. So this is perhaps, maybe, sorta kinda disheartening.   But, I am going to brew again this weekend and I want to make it a better experience.  
The recipe:

Recipe Specifications
--------------------------
Batch Size: 5.25 gal     
Boil Size: 4.65 gal
Estimated OG: 1.049 SG
Estimated Color: 3.0 SRM
Estimated IBU: 16.5 IBU
Boil Time: 90 Minutes

Ingredients:
------------
Amount        Item                                      Type         % or IBU     
3.00 lb       Pale Malt (2 Row) US (2.0 SRM)            Grain        33.33 %      
2.00 lb       Pilsner (2 Row) UK (1.0 SRM)              Grain        22.22 %      
1.00 lb       Barley, Flaked (1.7 SRM)                  Grain        11.11 %      
1.00 lb       Corn, Flaked (1.3 SRM)                    Grain        11.11 %      
1.00 lb       Pale Malt (6 Row) US (2.0 SRM)            Grain        11.11 %      
0.25 lb       Vienna Malt (3.5 SRM)                     Grain        2.78 %       
0.85 oz       Sterling [6.00 %]  (60 min)               Hops         15.5 IBU     
0.60 oz       Hallertauer [1.50 %]  (10 min)            Hops         1.0 IBU      
0.75 lb       Sugar, Table (Sucrose) (1.0 SRM)          Sugar        8.33 %       
1 Pkgs        American Ale (Wyeast Labs #1056) [800 ml stater]                 

Mash Schedule: Single Infusion, Full Body, Batch Sparge
Total Grain Weight: 8.25 lb
----------------------------
Single Infusion, Full Body, Batch Sparge
Step Time     Name               Description                         Step Temp    
90 min        Mash In            Add 10.31 qt of water at 160.2 F    149.0 F      

Sweet Stout: Revealed

I've been drinking this for while now. All in all its pretty good. Closest to my pre-brew wants for a homebrew.  It might be slightly under carbonated.