Brewday: April 25, 2010 - Uncle Dunkel Dunkelweizen

Summary

Volume to fermenter[ltr (gal)]: 23.00 Original Gravity[SG]:1.060
Mash Efficiency [%]: 75.00% Bitterness[IBU]:10.00
Colour [SRM(EBC)]:8.76(17.26)

Mash

Mash water volume [ltr (gal)]:21.17 (5.59) Mash tun volume required[ltr (gal)]:30.13 (7.96)
Total Mash Grain Weight [gms (lbs)]:7056.53 (15.56)

Grains:

Type Weight [gms (lbs)] Actual Weight
Ale Malt (Barrett Burston) 2962.09 (6.53)                     
Wheat Malt Dark (Weyermann) 4094.44 (9.03)                     
   
   

Mash Schedule:

Name Method Step temp
[C (F)]
Step time
[minutes]
Addition amount
[ltr (gal)]
Addition temp
[C (F)]
Liquor/grist ratio
[ltr/kg]
Saccrification Direct 67.00 (152.60) 60 0.00 (0.00) 0.00 (32.00) 3.20

Mash gravity @ 100% conversion [SG]:1.063

Test ph

Observed ph:
pH adjustments:


Sparge

Minimum required efficiency:75.00 % Max expected efficiency81.59 %

Sparge No Water addition [l]Expected recovered volume [l]Required gravityMax expected gravity
1 4.23 14.50 73.04 84.18
     
2 14.50 14.50 31.34 36.12
     
Combined 18.73 29.00 52.19 60.15
     

Assumed constants:

Absorbtion [l/kg]:1.3 Grain displacement [l/kg]:0.67

Preboil Values:

Preboil wort volume [ltr (gal)]:29.00 (7.66) @ mash out temp.29.69 (7.84)
Preboil gravity [SG]:1.052

Boil

Hops:

Hop Utilisation Method: Tinseth
Type AA(%) IBU Weight [gms (oz)] Actual Weight Time(minutes)
Hallertau Hersbrucker 2.50% 10.00 50.70 (1.79)             60.00


Postboil Values:

Evaporation [ltr (gal)]:4.00 (1.06)
Postboil wort volume [ltr (gal)]:26.72 (7.06)@ boiling temp.27.84 (7.35)
Postboil target gravity [SG]:1.060mash items only1.060
Boiler loses [ltr (gal)]:2.00 (0.53)

Yeast Pitching

Type Min Temp[C (F)] Max Temp[C (F)]
Weihenstephan Weizen - Wyeast 3068 18.00 (64.40) 24.00 (75.20)

Estimated required yeast cells (billion): 258.75

Dried yeast (gm): 13.76
 
No of liquid yeast(Wyeast/Whitelabs) packs: 2.75(Assumes 94% viability)
 
Approximate amount of solid slurry (ml):
One hour settling 367.02(Assumes 25% trub and 94% viability)
One day settling 183.51(Assumes 25% trub and 94% viability)
Longer than 1 week settling 95.83(Assumes 25% trub and 80% viability)

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