Brew Day: Hank-May 28, 2011

Brewday: Hank - May 28, 2011

Recipe Values:

Volume to fermenter[ltr (gal)]:	40.00	Total volume[ltr (gal)]:	41.00	Losses [ltr (gal)]:	1.00
Original Gravity[SG]:	1.063	Colour [SRM(EBC)]:	19.26(37.95)
Mash Efficiency [%]:	75.00%	Bitterness[IBU]:	35.20

Preboil Values:

Mash water volume [ltr (gal)]:	37.85 (10.00)	Mash tun volume [ltr (gal)]:	45.10 (11.91)	Mash tun loses [ltr (gal)]:	0.00 (0.00)
Preboil wort volume [ltr (gal)]:	43.00 (11.36)	@ mash out temp.	44.02 (11.63)	Preboil gravity [SG]:	1.056

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)]:	41.00 (10.83)	@ boiling temp.	42.71 (11.28)	Boiler lose [ltr (gal)]:	1.00 (0.26)
Postboil target gravity [SG]:	1.059	mash items only	1.059

Style: 10C. American Brown Ale

Description:

American brown ale, potentially for AHB case swap.

Estimated Original Gravity[SG]: 1.059	Estimated Final Gravity[SG]: 1.015	Alcohol By Volume[%]: 5.95
Bitterness [IBU]: 35.20	Colour [SRM(EBC)]: 19.26 (37.95)
Balance: 1.237	BU:GU ratio: 0.595

Mash schedule

Name	Type	Temperature [C (F)]	Time [Minutes]
Sacchrification	infusion	68.00 (154.40)	60

Fermentables

Type	Gravity [SG]	Gravity(%)	Weight [gms (lbs)]	Weight(%)
Ale Malt (Barrett Burston)	1.045	76.09%	8179.96 (18.03)	75.63%
Brown Malt	1.002	3.64%	439.29 (0.97)	4.06%
Chocolate Malt Pale (Bairds)	1.002	2.58%	292.86 (0.65)	2.71%
Crystal Malt Dark (Bairds)	1.001	1.86%	219.64 (0.48)	2.03%
Crystal Malt Pale (Bairds)	1.003	4.65%	512.50 (1.13)	4.74%
Wheat Malt (Barrett Burston)	1.007	11.18%	1171.43 (2.58)	10.83%

Hops

Hop Utilisation Method: Tinseth - No chill cooling method

Type	AA(%)	IBU	IBU(%)	Weight [gms (oz)]	Time(minutes)
Super Pride	13.00%	25.00	71.02%	35.18 (1.24)	60.00
Cascade	5.75%	3.61	0.00%	20.00 (0.71)	0.00
Columbus	14.00%	6.59	0.00%	15.00 (0.53)	0.00
Amarillo	8.90%	0.00	0.00%	25.00 (0.88)	Hop Tea
Cascade	5.75%	0.00	0.00%	25.00 (0.88)	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):

472.50

Dried yeast (gm):	25.13

No of liquid yeast(Wyeast/Whitelabs) packs:	5.03	(Assumes 94% viability)

Approximate amount of solid slurry (ml):
One hour settling	670.21	(Assumes 25% trub and 94% viability)
One day settling	335.11	(Assumes 25% trub and 94% viability)
Longer than 1 week settling	175.00	(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	Infusion	68.00 (154.40)	60	37.85 (10.00)	73.51 (164.31)	3.50

Mash Details

Mash water required [ltr (gal)]:	37.85 (10.00)	Mash tun volume required [ltr (gal)]:	45.10 (11.91)
Grain Weight [gms (lbs)]:	10815.67 (23.84)	Mash gravity @ 100% conversion [SG]:	1.073

Number of batches:

General:

Minimum required efficiency:	75.00 %	Max expected efficiency	84.30 %

Sparges:

Sparge No	Water addition [l]	Expected recovered volume [l]	Required gravity	Max expected gravity
1	0.00	23.79	75.98	85.41
2	19.21	19.21	32.12	36.10
Combined	19.21	43.00	56.39	63.38

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