Brew Day: Bigger and Browner-April 5, 2010

Brewday: Bigger and Browner - April 5, 2010

Recipe Values:

Volume to fermenter[ltr (gal)]:	42.00	Total volume[ltr (gal)]:	45.91	Losses [ltr (gal)]:	3.91
Original Gravity[SG]:	1.054	Colour [SRM(EBC)]:	33.08(65.16)
Mash Efficiency [%]:	75.00%	Bitterness[IBU]:	22.48

Preboil Values:

Mash water volume [ltr (gal)]:	31.00 (8.19)	Mash tun volume [ltr (gal)]:	45.27 (11.96)	Mash tun loses [ltr (gal)]:	2.00 (0.53)
Preboil wort volume [ltr (gal)]:	46.00 (12.15)	@ mash out temp.	47.10 (12.44)	Preboil gravity [SG]:	1.048

Postboil Values:

Evapouration [ltr (gal)]:	2.00 (0.53)	Evapouration Rate [ltr (gal)/hr]:	2.00 (0.53)	Boil time [Minutes]:	60.00
Postboil wort volume [ltr (gal)]:	45.91 (12.13)	@ boiling temp.	47.83 (12.63)	Boiler lose [ltr (gal)]:	2.00 (0.53)
Postboil target gravity [SG]:	1.053	mash items only	1.050

Style: 11C. Northern English Brown

Description:

Upping the brown malt from the previous recipe, as well as adding some amber in the mix.

Estimated Original Gravity[SG]: 1.053	Estimated Final Gravity[SG]: 1.015	Alcohol By Volume[%]: 5.06
Bitterness [IBU]: 22.48	Colour [SRM(EBC)]: 33.08 (65.16)
Balance: 0.827	BU:GU ratio: 0.427

Mash schedule

Name	Type	Temperature [C (F)]	Time [Minutes]
Protien	infusion	53.00 (127.40)	5
Sacchrification	infusion	65.00 (149.00)	90

Fermentables

Type	Gravity [SG]	Gravity(%)	Weight [gms (lbs)]	Weight(%)
Amber Malt	1.001	1.73%	189.87 (0.42)	1.77%
Barley Flaked (Bairds)	1.003	5.02%	599.74 (1.32)	5.60%
Brown Malt	1.002	3.16%	379.73 (0.84)	3.55%
Chocolate Malt (UK)	1.003	5.30%	599.74 (1.32)	5.60%
Crystal Malt Medium (Bairds)	1.002	3.75%	429.60 (0.95)	4.01%
Crystal Pale (Thomas Fawcett)	1.004	7.35%	853.96 (1.88)	7.98%
Golden Syrup	1.003	5.80%	371.49 (0.82)	3.47%
Maris Otter Malt (Bairds)	1.036	67.89%	7280.03 (16.05)	68.01%

Hops

Hop Utilisation Method: Tinseth

Type	AA(%)	IBU	IBU(%)	Weight [gms (oz)]	Time(minutes)
Fuggle	4.75%	10.22	45.45%	43.86 (1.55)	60.00
Super Pride	14.25%	12.26	54.55%	17.54 (0.62)	60.00

Yeast

Type	Flocculation	Attenuation	Min Temp[C (F)]	Max Temp[C (F)]	Alcohol Tolerance
Ringwood Ale - Wyeast 1187	high	70.00%	18.00 (64.40)	23.00 (73.40)	10% ABV

Estimated required yeast cells (billion):

429.19

Dried yeast (gm):	22.83

No of liquid yeast(Wyeast/Whitelabs) packs:	4.57	(Assumes 94% viability)

Approximate amount of solid slurry (ml):
One hour settling	608.78	(Assumes 25% trub and 94% viability)
One day settling	304.39	(Assumes 25% trub and 94% viability)
Longer than 1 week settling	158.96	(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]
Protien	Infusion	53.00 (127.40)	5	22.14 (5.85)	59.12 (138.42)	2.14
Sacchrification	Infusion	65.00 (149.00)	90	8.86 (2.34)	95.00 (203.00)	3.00

Mash Details

Mash water required [ltr (gal)]:	31.00 (8.19)	Mash tun volume required [ltr (gal)]:	45.27 (11.96)
Grain Weight [gms (lbs)]:	10332.68 (22.78)	Mash gravity @ 100% conversion [SG]:	1.045

Number of batches:

General:

Minimum required efficiency:	75.00 %	Max expected efficiency	83.98 %

Sparges:

Sparge No	Water addition [l]	Expected recovered volume [l]	Required gravity	Max expected gravity
1	7.35	23.00	67.92	79.22
2	23.00	23.00	27.18	31.70
Combined	30.35	46.00	47.55	55.46

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