Brew Day: Beerfest 2010 - Champion Brewer's - American Brown-November 18, 2010

Brewday: Beerfest 2010 - Champion Brewer's - American Brown - November 18, 2010

Recipe Values:

Volume to fermenter[ltr (gal)]:	23.00	Total volume[ltr (gal)]:	26.72	Losses [ltr (gal)]:	3.72
Original Gravity[SG]:	1.056	Colour [SRM(EBC)]:	29.47(58.05)
Mash Efficiency [%]:	75.00%	Bitterness[IBU]:	36.70

Preboil Values:

Mash water volume [ltr (gal)]:	20.31 (5.36)	Mash tun volume [ltr (gal)]:	29.56 (7.81)	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]:	1.049

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]:	1.056	mash items only	1.056

Style: 10C. American Brown Ale

Description:

Recipe for the 2010 Champion Brewer's prize, to be brewed at Jamiesons Brewery and put on tap at Mrs Parmas

Estimated Original Gravity[SG]: 1.056	Estimated Final Gravity[SG]: 1.014	Alcohol By Volume[%]: 5.63
Bitterness [IBU]: 36.70	Colour [SRM(EBC)]: 29.47 (58.05)
Balance: 1.362	BU:GU ratio: 0.656

Mash schedule

Name	Type	Temperature [C (F)]	Time [Minutes]
Sacchrification	direct	68.00 (154.40)	90

Fermentables

Type	Gravity [SG]	Gravity(%)	Weight [gms (lbs)]	Weight(%)
Ale Malt (Barrett Burston)	1.035	62.51%	4146.93 (9.14)	61.27%
Brown Malt	1.002	3.49%	259.82 (0.57)	3.84%
Carapils Malt (Weyermann)	1.005	8.93%	632.99 (1.40)	9.35%
Choc Chit Malt (Joe White)	1.001	1.61%	114.32 (0.25)	1.69%
Chocolate Malt (Bairds)	1.001	2.53%	176.68 (0.39)	2.61%
Chocolate Malt Pale (Bairds)	1.001	1.63%	114.32 (0.25)	1.69%
Crystal Malt Dark (Bairds)	1.001	1.43%	103.93 (0.23)	1.54%
Crystal Pale (Thomas Fawcett)	1.005	8.93%	641.79 (1.41)	9.48%
Wheat Malt (Barrett Burston)	1.005	8.93%	577.61 (1.27)	8.53%

Hops

Hop Utilisation Method: Tinseth

Type	AA(%)	IBU	IBU(%)	Weight [gms (oz)]	Time(minutes)
Amarillo	8.90%	25.00	68.12%	34.34 (1.21)	60.00
Amarillo	8.90%	6.70	18.26%	18.56 (0.65)	15.00
Cascade	5.75%	5.00	13.62%	21.43 (0.76)	15.00
Amarillo	8.90%	0.00	0.00%	14.32 (0.50)	Hop Tea
Cascade	5.75%	0.00	0.00%	4.77 (0.17)	Hop Tea

Yeast

Type	Flocculation	Attenuation	Min Temp[C (F)]	Max Temp[C (F)]	Alcohol Tolerance
American Ale - Wyeast 1056	medium-low	75.00%	15.00 (59.00)	22.00 (71.60)	10% ABV

Estimated required yeast cells (billion):

241.44

Dried yeast (gm):	12.84

No of liquid yeast(Wyeast/Whitelabs) packs:	2.57	(Assumes 94% viability)

Approximate amount of solid slurry (ml):
One hour settling	342.47	(Assumes 25% trub and 94% viability)
One day settling	171.24	(Assumes 25% trub and 94% viability)
Longer than 1 week settling	89.42	(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]
Sacchrification	Direct	68.00 (154.40)	90

Mash Details

Mash water required [ltr (gal)]:	20.31 (5.36)	Mash tun volume required [ltr (gal)]:	29.56 (7.81)
Grain Weight [gms (lbs)]:	6768.38 (14.92)	Mash gravity @ 100% conversion [SG]:	1.057

Number of batches:

General:

Minimum required efficiency:	75.00 %	Max expected efficiency	82.32 %

Sparges:

Sparge No	Water addition [l]	Expected recovered volume [l]	Required gravity	Max expected gravity
1	4.72	14.50	68.56	79.72
2	14.50	14.50	28.83	33.53
Combined	19.22	29.00	48.70	56.63

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