Brew Day: ESB-August 17, 2010

Brewday: ESB - August 17, 2010

Recipe Values:

Volume to fermenter[ltr (gal)]:	23.00	Total volume[ltr (gal)]:	26.72	Losses [ltr (gal)]:	3.72
Original Gravity[SG]:	1.055	Colour [SRM(EBC)]:	17.10(33.68)
Mash Efficiency [%]:	75.00%	Bitterness[IBU]:	33.05

Preboil Values:

Mash water volume [ltr (gal)]:	18.50 (4.89)	Mash tun volume [ltr (gal)]:	28.37 (7.49)	Mash tun loses [ltr (gal)]:	2.00 (0.53)
Preboil wort volume [ltr (gal)]:	29.00 (7.66)	@ mash out temp.	29.69 (7.84)	Preboil gravity [SG]:	1.045

Postboil Values:

Evapouration [ltr (gal)]:	4.00 (1.06)	Evapouration Rate [ltr (gal)/hr]:	4.00 (1.06)	Boil time [Minutes]:	60.00
Postboil wort volume [ltr (gal)]:	26.72 (7.06)	@ boiling temp.	27.84 (7.35)	Boiler lose [ltr (gal)]:	2.00 (0.53)
Postboil target gravity [SG]:	1.055	mash items only	1.051

Style: 8C. Extra Special/Strong Bitter (English Pale Ale)

Description:

Straight from Jamil's and John's brewing classic styles

Made a few adjustments after tasting Fuller's ESB last night:
Added a lot more dark crystal to enhance caramel flavours, and many different hop types to increase hop complexity.

Estimated Original Gravity[SG]: 1.055	Estimated Final Gravity[SG]: 1.016	Alcohol By Volume[%]: 5.22
Bitterness [IBU]: 33.05	Colour [SRM(EBC)]: 17.10 (33.68)
Balance: 1.148	BU:GU ratio: 0.601

Fermentables

Type	Gravity [SG]	Gravity(%)	Weight [gms (lbs)]	Weight(%)
Crystal Malt Dark (Bairds)	1.005	9.45%	676.56 (1.49)	10.55%
Crystal Malt Pale (Bairds)	1.002	3.97%	265.79 (0.59)	4.15%
Maris Otter Malt (Bairds)	1.044	80.16%	5223.57 (11.52)	81.48%
Sugar, Table (Sucrose)	1.004	6.42%	244.65 (0.54)	3.82%

Hops

Hop Utilisation Method: Tinseth

Type	AA(%)	IBU	IBU(%)	Weight [gms (oz)]	Time(minutes)
East Kent Goldings	4.75%	10.00	30.25%	25.51 (0.90)	60.00
Millennium	14.50%	8.00	24.20%	6.69 (0.24)	60.00
Nelson sauvin	12.50%	11.27	34.09%	10.92 (0.39)	60.00
Tettnang	4.50%	3.00	9.08%	16.28 (0.57)	15.00
East Kent Goldings	4.75%	0.79	2.38%	46.48 (1.64)	1.00

Yeast

Type	Flocculation	Attenuation	Min Temp[C (F)]	Max Temp[C (F)]	Alcohol Tolerance
London ESB Ale - Wyeast 1968	very high	69.00%	18.00 (64.40)	22.00 (71.60)	10% ABV

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)

Note yeast viability reduces greatly over time as demonstrated in the table below.

Age	Viability	Age	Viability
1 week	80%	2 weeks	70%
3 weeks	60%	4 weeks	50%
5 weeks	40%	6 weeks	25%
7 weeks	15%	8 weeks or older	less than 10%

Viability deterioration varies greatly between different yeast strains. You should consider doing a yeast starter for any yeast older than 2 weeks to ensure yeast viability prior to pitching.

Liquor to grist ratio [ltr/kg]:

Saccrification rest - 3.00 to 4.00 [ltr/kg] is recommended.

A lower liquor to grist ratio will produce a less fermentable wort (with more complex sugars) while a higher liquor to grist ratio can result in a more fermentable wort.

Both extremes will require a longer rest time ( up to 90 minutes )

Protein rest - less then 2.50 [ltr/kg] is recommended.

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 Details

Mash water required [ltr (gal)]:	18.50 (4.89)	Mash tun volume required [ltr (gal)]:	28.37 (7.49)
Grain Weight [gms (lbs)]:	6165.92 (13.59)	Mash gravity @ 100% conversion [SG]:	1.048

Number of batches:

General:

Minimum required efficiency:	75.00 %	Max expected efficiency	83.85 %

Sparges:

Sparge No	Water addition [l]	Expected recovered volume [l]	Required gravity	Max 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:

The following are assumed in calculations below and will eventually be able to be set.

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