Continuing efficiency 2
To day I'm brewing a Directors clone – a Malt Miller AG kit.
I set up to use Biabacus but it seemed to want 39 liters of water my calculations on paper and the calculations of Biabcalculator.com both came out about 33 liters and that is in line with my past experience.
So in the end I mashed with 23 litres and sparged with 10 litres.
Water Report from United Utilities.
Ca…………...73ppm
Mg…….…….29
Cl…………….49
So4…………..60
Fe…..……....<3
Na…………...29
Alkalinity……211 tested Salafert test kit.
Water Additions.
23litre for mash
23.2 ml….. AMS
7.61g……..CaSo4
0.64.……...NaCl
10litres for sparge
10.1 ml …..AMS no other treatment.
Batch.
Mash………66DegC 90 mins
Boil………..90 mins
4160g……..Maris Otter
220………..Crystal
20………….Black.
Target……..28g…..at O mins
Celeia……..10……90 mins – flame out.
Expected values.
OG………..1.048 FG……….1.008 Brew Lenght………..25 litres (who knows?)
Measurements.
Volume in kettle after bag raised and allowed to drain.
20.9 litres………..SG 1.050 Brewers Friend efficiency 75.4%
After a 10 litre sparge and sparge water added back to kettle. (pre-boil volume)
29.7 litres………..SG 1.040 Brewers Friend efficiency 85.6%
Post Boil. 23 litres……….SG/OG 1.050 Brewers Friend efficiency 83%
So a sparge seems to have moved the efficiency up by about 8%.
I'm not fully convinced I know how to interpret my measurements.
On temperature control.
I'm lead to believe that most of the mash conversion occurs in the first 20 mins of so, I've even seen claims that mashing was complete in 20 mins.
I have lots of insulation, 2 layers of camping mats, bubble wrap and a sleeping bag, I mashed in, stirred well put the lid on and arranged the insulation.
I still saw a 2 degree fall within the first 30 minutes, the beer will still be good but realistically I did not hit my mash profile. Is this typical of BIAB without re-circulation?
ATB. aamcle
Continuing efficiency 2 - long sorry
Post #1 made 7 years ago
Last edited by aamcle on 04 Oct 2016, 00:13, edited 1 time in total.
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