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Messages - MDixon

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916
All Grain Brewing / Re: Efficiency for no-sparge?
« on: October 31, 2011, 01:57:32 PM »
What's the gravity you generally are shooting for when you get 75%?

'm not saying one couldn't get 75% with a no sparge, I'm just saying it's the exception rather than the rule.

917
Beer Recipes / Re: Pumpkin Ale
« on: October 31, 2011, 10:03:03 AM »
Now you made an interesting point and may not know it. Why not, if you are gonna add the pumpkin anyway, just add it to the primary fermenter. If you sanitize (and perhaps clean) the exterior of the can the pumpkin in the can should already be sanitary.

It would be interesting to take a low hopped pale ale and add a can of pumpkin with no spices to one fermenter and do nothing to the other and then determine if one could perceive the pumpkin other than visually. I've always felt the spices drive the flavor in most pumpkin beers, but it might be worth a while. I may actually try this the next time I crank out a Saison to see what happens. Thanks for the idea...

918
All Grain Brewing / Re: Mashing Raw Wheat
« on: October 31, 2011, 09:13:14 AM »
One day I'll go find all the sources I dug up about wheat starch gelatinization.

FWIW - Most of the homebrew literature says to just mash it and I believe that is incorrect since it doesn't hold true for all wheat varieties.

919
All Grain Brewing / Re: Efficiency for no-sparge?
« on: October 31, 2011, 09:11:30 AM »
I just cannot see why a lauter efficiency is even useful. Since we know the absorption, just calc the volume one wants in the kettle to know how much "sparge" water to add in total. I guess that could let you know you aren't draining the tun fully, but why not simply drain the tun fully?

To me the mash efficiency is most important since it will predict the gravity of the resultant beer.

920
All Grain Brewing / Re: Mashing Raw Wheat
« on: October 31, 2011, 05:48:25 AM »
Raw wheat has a gelatanization temp that is lower than that of the mash temp you will use for the barley.  It will be converted in the mash. 

Doing a cereal mash will give a better mouthfeel (according to Moaher0, and extraction by bursting the hard small starch granules making them available for conversion.  This is the same as for a decoction mash using all barley, which gives slightly higher extract.


Unfortunately that is not universally so, it actually depends upon the type of wheat. I did some research many moons ago when I was on a Belgian Wit making kick and found it varies so widely it's best to gelatinize the wheat before mashing to be sure. I'm sure I've posted some of the documentation somewhere on the AHA forum, ahh yes
http://www.homebrewersassociation.org/forum/index.php?topic=8193.15

Another potential issue is gelatinization temps are measured with flour in a lab and most of the time in our world we are talking about cracked wheat.

921
All Grain Brewing / Re: Efficiency for no-sparge?
« on: October 31, 2011, 05:20:18 AM »
As long as your conversion efficiency is 100%, it's really easy to calculate what the efficiency will be for a no-sparge. It's just the ratio of the mash runoff to the total strike volume.

For example, if the grist weight is 12.5 lb (1.5 gal absorption) and the pre-boil volume is 6.5 gal, the efficiency will be 6.5/8.0 = 81%.

You do realize you are only calculating a volumetric efficiency of the water utilized, correct?

With a 12.5 lb grist your theoretical gravity points would be ~450. With 100% efficiency that 6.5 gallon batch would have a gravity of 1.069, 80%=1.055, 70%=1.048, etc...with a no-sparge I believe most people with an adequate crush should see their efficiency in the 60-70% range...YMMV

922
All Grain Brewing / Re: Efficiency for no-sparge?
« on: October 30, 2011, 11:44:43 AM »
I'd say 70% is a little high for planning purposes. I'd plan on 60% and if you get more you can always boil less ;)

923
All Grain Brewing / Re: Efficiency for no-sparge?
« on: October 30, 2011, 08:35:01 AM »
I got 64% on an 11 gallon finished batch size no sparge ESB which started life at 1.044. The tun wouldn't hold everything so I mixed half in the cooler and half back in the HLT and then "sparged" the grain with more mash as the tun started to empty. We drained it very quickly and were shocked at our ultimate efficiency.

924
Beer Recipes / Re: Pumpkin Ale
« on: October 17, 2011, 11:25:10 PM »
I seem to have to repeatedly pull out this info on pumpkin. I don't see any benefit to mashing.

From another forum
Quote
The nutritional information for Libby's canned "100% pumpkin says per serving it has 9 grams total carbs, 5g fiber, 4g sugars. This doesn't leave any room for starches. The USDA, however, for the same serving size lists 9.27g total carbs, of which 3.5g is fiber, and 4.03g sugars. This leaves about 1.74g other carbs per 122g serving, or about 1.43% of the total weight of the (canned) pumpkin.

Given that, and that most of the recipes for pumpkin ale I've seen call for at most 3 lbs. of pumpkin, that will give you about 19g of starch for the entire batch. Even assuming all of this is converted to pure sugar, I'd rather skip the trouble of mashing it and lose out on that insignificant amount. Adding it to the kettle will still get me the 45g of sugars, but really I'm using it for color and flavor. When I did the math earlier, I found that (raw) pumpkin had a potential gravity of something like 1.002."

The math for fresh pumpkin is a bit different, because of the processing, and because the data doesn't specify the type of pumpkin. (I suspect it's not the small "pie pumpkin".)

There are also lots of variables when you're dealing with fresh pumpkin. You don't know how long it's been since it's been picked, etc. I think I may end up using canned pumpkin, although it's generally against my principles to used canned over fresh, but we have an organic, preservative-free canned pumpkin here in NC. Canned pumpkin been shown to have a greater nutritional content than fresh, anyway, which is true for a lot of fruits and vegetables.
http://www.detnews.com/2004/eatsdrinks/ ... 324771.htm

Here's what the complex carb data boils down to, per
100 grams:
Raw- 4.64g starch (71.4% of total carbs)
Boiled- 2.78g starch (56.7% of total carbs)
Canned- 1.89g starch (23.4% of total carbs)

Now, even assuming you're using an average raw pumpkin (the highest starch content above), and you use 8lbs (the maximum I've seen in a batch), AND it all is converted to sugars, you're talking about 168 grams of sugars, or 0.37 lbs. By my math, this gives you a net increase in gravity of about 0.002. If you use 3 lbs canned pumpkin, as I've typically seen, this goes down to around 0.16 lbs of sugars. This gets me 0.001. I'm not sure I would go through the troubles of mashing for that.


925
The Pub / Re: Farewell to my pal...
« on: October 16, 2011, 08:14:38 AM »
Makes me appreciate our beast all that much more. Sorry for your loss.

926
Beer Recipes / Re: Pumpkin Ale
« on: October 15, 2011, 07:12:05 AM »
Pumpkin is just about a near nothing in beer IMO (again, IMO) as can be. I suggest you show the can of pumpkin to the mash and boil and then put it in the cupboard for next years batch. Yes, I am serious.

My local brewery has a lovely pumpkin ale which everyone raves about and they cannot hardly keep up with demand. They do use pumpkin in the beer at the rate of 1-2lb per bbl, so at 2lb that is 2lb per 31 gallons or in our sense, about 5 ounces per 5 gallon batch or an ounce per gallon. The reason they use it is to be able to say the beer has pumpkin in it, the flavor really comes from the spice contributions.

If you are after a pumpkin with the flavor of the beer you had, I'd go back to your local brewpub and ask the brewer how much they used for the batch.

927
The Pub / Re: Good bye dial up, hello 2011!!! Kinda.
« on: October 13, 2011, 06:10:20 AM »
Coming from dialup how would you know ;)

928
All Things Food / Re: Kitchen Knives
« on: October 12, 2011, 05:41:11 PM »
I think mine came from Gander Mtn, I'm sure there are betters, but it works great.

929
The Pub / Re: Good bye dial up, hello 2011!!! Kinda.
« on: October 12, 2011, 05:31:14 AM »
I was at a hotel and needed a 256MB file and the download time was going to be an two and a half hours!!! I had my wife get it for me at work to pull out the two files I needed. When I got home I downloaded the file and it took about 5 min.

930
Beer Travel / Re: 20 best bars for beer geeks
« on: October 11, 2011, 04:23:12 AM »
I think if you click to the chains you will see TX in a couple there...FS, GM...

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