Brewday: August 17, 2010 - ESB

Summary

Volume to fermenter[ltr (gal)]: 23.00 Original Gravity[SG]:1.055
Mash Efficiency [%]: 75.00% Bitterness[IBU]:33.05
Colour [SRM(EBC)]:17.10(33.68)

Mash

Mash water volume [ltr (gal)]:18.50 (4.89) Mash tun volume required[ltr (gal)]:28.37 (7.49)
Total Mash Grain Weight [gms (lbs)]:6165.92 (13.59)

Grains:

Type Weight [gms (lbs)] Actual Weight
Crystal Malt Dark (Bairds) 676.56 (1.49)                     
Crystal Malt Pale (Bairds) 265.79 (0.59)                     
Maris Otter Malt (Bairds) 5223.57 (11.52)                     
   
   

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]:1.048

Test ph

Observed ph:
pH adjustments:


Sparge

Minimum required efficiency:75.00 % Max expected efficiency83.85 %

Sparge No Water addition [l]Expected recovered volume [l]Required gravityMax expected gravity
1 5.74 14.50 63.87 75.66
     
2 14.50 14.50 25.67 30.40
     
Combined 20.24 29.00 44.77 53.03
     

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]:1.045

Boil

Hops:

Hop Utilisation Method: Tinseth
Type AA(%) IBU Weight [gms (oz)] Actual Weight Time(minutes)
East Kent Goldings 4.75% 10.00 25.51 (0.90)             60.00
Millennium 14.50% 8.00 6.69 (0.24)             60.00
Nelson sauvin 12.50% 11.27 10.92 (0.39)             60.00
Tettnang 4.50% 3.00 16.28 (0.57)             15.00
East Kent Goldings 4.75% 0.79 46.48 (1.64)             1.00

Other fermentables:

Type Weight [gms (lbs)] Actual Weight
Sugar, Table (Sucrose) 244.65 (0.54)                     

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]:1.055mash items only1.051
Boiler loses [ltr (gal)]:2.00 (0.53)

Yeast Pitching

Type Min Temp[C (F)] Max Temp[C (F)]
London ESB Ale - Wyeast 1968 18.00 (64.40) 22.00 (71.60)

Estimated required yeast cells (billion): 237.19

Dried yeast (gm): 12.62
 
No of liquid yeast(Wyeast/Whitelabs) packs: 2.52(Assumes 94% viability)
 
Approximate amount of solid slurry (ml):
One hour settling 336.44(Assumes 25% trub and 94% viability)
One day settling 168.22(Assumes 25% trub and 94% viability)
Longer than 1 week settling 87.85(Assumes 25% trub and 80% viability)

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