Brew Day: Frazey Brown Ale-January 9, 2010

Brewday: Frazey Brown Ale - January 9, 2010

Recipe Values:

Volume to fermenter[ltr (gal)]:	23.00	Total volume[ltr (gal)]:	26.72	Losses [ltr (gal)]:	3.72
Original Gravity[SG]:	1.048	Colour [SRM(EBC)]:	22.79(44.90)
Mash Efficiency [%]:	75.00%	Bitterness[IBU]:	39.52

Preboil Values:

Mash water volume [ltr (gal)]:	17.24 (4.55)	Mash tun volume [ltr (gal)]:	27.55 (7.28)	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]:	1.042

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]:	1.048	mash items only	1.048

Style: 10C. American Brown Ale

Description:

American Brown Ale (based on JZ recipe)

Estimated Original Gravity[SG]: 1.048	Estimated Final Gravity[SG]: 1.012	Alcohol By Volume[%]: 4.83
Bitterness [IBU]: 39.52	Colour [SRM(EBC)]: 22.79 (44.90)
Balance: 1.711	BU:GU ratio: 0.823

Mash schedule

Name	Type	Temperature [C (F)]	Time [Minutes]
Sacchrification	infusion	67.00 (152.60)	60

Fermentables

Type	Gravity [SG]	Gravity(%)	Weight [gms (lbs)]	Weight(%)
Cara-Pils/Dextrine	1.003	5.83%	360.78 (0.80)	6.28%
Caramel/Crystal Malt - 40L	1.003	6.01%	360.78 (0.80)	6.28%
Caramel/Crystal Malt - 60L	1.001	2.58%	154.62 (0.34)	2.69%
Chocolate Malt (Bairds)	1.002	3.65%	219.05 (0.48)	3.81%
Pale Malt (2 Row) US	1.038	79.56%	4509.78 (9.94)	78.48%
Victory Malt	1.001	2.36%	141.74 (0.31)	2.47%

Hops

Hop Utilisation Method: Rager

Type	AA(%)	IBU	IBU(%)	Weight [gms (oz)]	Time(minutes)
Amarillo	9.50%	21.52	54.47%	19.65 (0.69)	60.00
Amarillo	9.50%	10.97	27.77%	29.47 (1.04)	20.00
Amarillo	9.50%	7.02	17.76%	29.47 (1.04)	10.00
Amarillo	9.50%	0.00	0.00%	98.76 (3.48)	Dry Hopped

Yeast

Type	Flocculation	Attenuation	Min Temp[C (F)]	Max Temp[C (F)]	Alcohol Tolerance
Saf Ale S-04	low	75.00%	16.00 (60.80)	24.00 (75.20)	medium

Estimated required yeast cells (billion):

207.00

Dried yeast (gm):	11.01

No of liquid yeast(Wyeast/Whitelabs) packs:	2.20	(Assumes 94% viability)

Approximate amount of solid slurry (ml):
One hour settling	293.62	(Assumes 25% trub and 94% viability)
One day settling	146.81	(Assumes 25% trub and 94% viability)
Longer than 1 week settling	76.67	(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	67.00 (152.60)	60	17.24 (4.55)	73.29 (163.92)	3.00

Mash Details

Mash water required [ltr (gal)]:	17.24 (4.55)	Mash tun volume required [ltr (gal)]:	27.55 (7.28)
Grain Weight [gms (lbs)]:	5746.75 (12.67)	Mash gravity @ 100% conversion [SG]:	1.041

Number of batches:

General:

Minimum required efficiency:	75.00 %	Max expected efficiency	84.94 %

Sparges:

Sparge No	Water addition [l]	Expected recovered volume [l]	Required gravity	Max expected gravity
1	6.45	14.50	60.16	72.18
2	14.50	14.50	23.34	28.01
Combined	20.95	29.00	41.75	50.10

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