Brew Day: Best Bitter-January 23, 2010

Brewday: Best Bitter - January 23, 2010

Recipe Values:

Volume to fermenter[ltr (gal)]:	38.00	Total volume[ltr (gal)]:	42.00	Losses [ltr (gal)]:	4.00
Original Gravity[SG]:	1.050	Colour [SRM(EBC)]:	7.42(14.62)
Mash Efficiency [%]:	75.00%	Bitterness[IBU]:	34.22

Preboil Values:

Mash water volume [ltr (gal)]:	34.14 (9.02)	Mash tun volume [ltr (gal)]:	39.58 (10.46)	Mash tun loses [ltr (gal)]:	2.00 (0.53)
Preboil wort volume [ltr (gal)]:	40.00 (10.57)	@ mash out temp.	40.95 (10.82)	Preboil gravity [SG]:	1.043

Postboil Values:

Evapouration [ltr (gal)]:	0.00 (0.00)	Evapouration Rate [ltr (gal)/hr]:	0.00 (0.00)	Boil time [Minutes]:	60.00
Postboil wort volume [ltr (gal)]:	42.00 (11.10)	@ boiling temp.	43.75 (11.56)	Boiler lose [ltr (gal)]:	2.00 (0.53)
Postboil target gravity [SG]:	1.048	mash items only	1.043

Style: 8B. Special/Best/Premium Bitter

Description:

Estimated Original Gravity[SG]: 1.048	Estimated Final Gravity[SG]: 1.014	Alcohol By Volume[%]: 4.67
Bitterness [IBU]: 34.22	Colour [SRM(EBC)]: 7.42 (14.62)
Balance: 1.380	BU:GU ratio: 0.707

Mash schedule

Name	Type	Temperature [C (F)]	Time [Minutes]
Protein rest	infusion	53.00 (127.40)	5
Sacchrification	infusion	67.00 (152.60)	60
Mash out	infusion	75.00 (167.00)	10

Fermentables

Type	Gravity [SG]	Gravity(%)	Weight [gms (lbs)]	Weight(%)
Amber Malt	1.002	4.94%	456.52 (1.01)	5.26%
Aromatic Malt	1.000	1.02%	91.30 (0.20)	1.05%
Biscuit Malt	1.001	2.23%	200.00 (0.44)	2.31%
Cane (Beet) Sugar	1.005	10.33%	544.67 (1.20)	6.28%
Crystal Pale (Thomas Fawcett)	1.003	5.61%	547.83 (1.21)	6.32%
Maris Otter Malt (Bairds)	1.035	72.28%	6517.37 (14.37)	75.15%
Oats, Malted	1.002	3.60%	315.00 (0.69)	3.63%

Hops

Hop Utilisation Method: Tinseth

Type	AA(%)	IBU	IBU(%)	Weight [gms (oz)]	Time(minutes)
Super Pride	13.00%	28.97	84.65%	40.00 (1.41)	60.00
East Kent Goldings	4.75%	5.25	15.35%	40.00 (1.41)	15.00
Styrian Goldings	5.25%	0.00	0.00%	45.65 (1.61)	Hop Tea

Yeast

Type	Flocculation	Attenuation	Min Temp[C (F)]	Max Temp[C (F)]	Alcohol Tolerance
West Yorkshire Ale (Timothy Landlord) - Wyeast 1469	High	69.00%	17.00 (62.60)	22.00 (71.60)	9

Miscellaneous

Name	Type	Use	Amount	Time [Minutes]
Calcium Chloride	wateragent	mash	1.00 (0.04) [gms (oz)]	(Not Available)
Citric Acid	wateragent	mash	0.50 (0.02) [gms (oz)]	(Not Available)
Sulphate	wateragent	mash	2.74 (0.10) [gms (oz)]	(Not Available)

Estimated required yeast cells (billion):

356.25

Dried yeast (gm):	18.95

No of liquid yeast(Wyeast/Whitelabs) packs:	3.79	(Assumes 94% viability)

Approximate amount of solid slurry (ml):
One hour settling	505.32	(Assumes 25% trub and 94% viability)
One day settling	252.66	(Assumes 25% trub and 94% viability)
Longer than 1 week settling	131.94	(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]
Protein rest	Infusion	53.00 (127.40)	5	16.25 (4.29)	59.56 (139.21)	2.00
Sacchrification	Infusion	67.00 (152.60)	60	8.13 (2.15)	95.00 (203.00)	3.00
Mash out	Infusion	75.00 (167.00)	10	9.75 (2.58)	95.00 (203.00)	4.20

Mash Details

Mash water required [ltr (gal)]:	34.14 (9.02)	Mash tun volume required [ltr (gal)]:	39.58 (10.46)
Grain Weight [gms (lbs)]:	8128.02 (17.92)	Mash gravity @ 100% conversion [SG]:	1.047

Number of batches:

General:

Minimum required efficiency:	75.00 %	Max expected efficiency	85.08 %

Sparges:

Sparge No	Water addition [l]	Expected recovered volume [l]	Required gravity	Max expected gravity
1	0.00	21.57	59.80	71.23
2	18.43	18.43	24.25	28.88
Combined	18.43	40.00	43.42	51.72

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