Brew Day: Matt's Red Head-June 19, 2010

Brewday: Matt's Red Head - June 19, 2010

Recipe Values:

Volume to fermenter[ltr (gal)]:	23.00	Total volume[ltr (gal)]:	24.92	Losses [ltr (gal)]:	1.92
Original Gravity[SG]:	1.054	Colour [SRM(EBC)]:	28.16(55.48)
Mash Efficiency [%]:	75.00%	Bitterness[IBU]:	26.08

Preboil Values:

Mash water volume [ltr (gal)]:	1.85 (0.49)	Mash tun volume [ltr (gal)]:	15.13 (4.00)	Mash tun loses [ltr (gal)]:
Preboil wort volume [ltr (gal)]:	24.00 (6.34)	@ mash out temp.	24.57 (6.49)	Preboil gravity [SG]:	1.005

Postboil Values:

Evapouration [ltr (gal)]:	1.00 (0.26)	Evapouration Rate [ltr (gal)/hr]:	1.00 (0.26)	Boil time [Minutes]:	60.00
Postboil wort volume [ltr (gal)]:	24.92 (6.58)	@ boiling temp.	25.95 (6.86)	Boiler lose [ltr (gal)]:	0.00 (0.00)
Postboil target gravity [SG]:	1.049	mash items only	1.005

Style: 9D. Irish Red Ale

Description:

Celebratory Red Ale for my good friend Matt B

Estimated Original Gravity[SG]: 1.049	Estimated Final Gravity[SG]: 1.011	Alcohol By Volume[%]: 5.17
Bitterness [IBU]: 26.08	Colour [SRM(EBC)]: 28.16 (55.48)
Balance: 1.171	BU:GU ratio: 0.528

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(%)
Black (Patent) Malt	1.001	1.25%	98.00 (0.22)	2.71%
Choc Chit Malt (Joe White)	1.002	4.18%	244.00 (0.54)	6.74%
Crystal Malt Medium (Bairds)	1.002	4.73%	276.00 (0.61)	7.63%
Dark Dry Extract	1.015	29.95%	1000.00 (2.20)	27.64%
Light Dry Extract	1.030	59.89%	2000.00 (4.41)	55.28%

Hops

Hop Utilisation Method: Tinseth

Type	AA(%)	IBU	IBU(%)	Weight [gms (oz)]	Time(minutes)
East Kent Goldings	4.75%	11.51	44.16%	26.05 (0.92)	60.00
Fuggle	4.75%	8.85	33.93%	26.05 (0.92)	30.00
East Kent Goldings	4.75%	5.71	21.91%	26.05 (0.92)	15.00

Yeast

Type	Flocculation	Attenuation	Min Temp[C (F)]	Max Temp[C (F)]	Alcohol Tolerance
Nottingham British Ale - Danstar	High	78.00%	14.00 (57.20)	21.00 (69.80)	Medium

Miscellaneous

Name	Type	Use	Amount	Description	Time [Minutes]
Irish Moss	fining	boil	1.08 (0.04) [gms (oz)]	WhirlFloc	10.0

Estimated required yeast cells (billion):

231.66

Dried yeast (gm):	12.32

No of liquid yeast(Wyeast/Whitelabs) packs:	2.46	(Assumes 94% viability)

Approximate amount of solid slurry (ml):
One hour settling	328.59	(Assumes 25% trub and 94% viability)
One day settling	164.30	(Assumes 25% trub and 94% viability)
Longer than 1 week settling	85.80	(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	1.85 (0.49)	73.29 (163.92)	3.00

Mash Details

Mash water required [ltr (gal)]:	1.85 (0.49)	Mash tun volume required [ltr (gal)]:	15.13 (4.00)
Grain Weight [gms (lbs)]:	618.00 (1.36)	Mash gravity @ 100% conversion [SG]:	1.000

Number of batches:

General:

Minimum required efficiency:	75.00 %	Max expected efficiency	96.59 %

Sparges:

Sparge No	Water addition [l]	Expected recovered volume [l]	Required gravity	Max expected gravity
1	12.87	12.00	8.15	11.34
2	12.00	12.00	1.51	2.10
Combined	24.87	24.00	4.83	6.72

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