Brew Day: DrinkYourWheaties Hefeweizen-January 3, 2010

Brewday: DrinkYourWheaties Hefeweizen - January 3, 2010

Recipe Values:

Volume to fermenter[ltr (gal)]:	20.00	Total volume[ltr (gal)]:	23.69	Losses [ltr (gal)]:	3.69
Original Gravity[SG]:	1.056	Colour [SRM(EBC)]:	3.34(6.58)
Mash Efficiency [%]:	75.00%	Bitterness[IBU]:	10.00

Preboil Values:

Mash water volume [ltr (gal)]:	17.06 (4.51)	Mash tun volume [ltr (gal)]:	25.89 (6.84)	Mash tun loses [ltr (gal)]:	2.00 (0.53)
Preboil wort volume [ltr (gal)]:	26.00 (6.87)	@ mash out temp.	26.62 (7.03)	Preboil gravity [SG]:	1.047

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)]:	23.69 (6.26)	@ boiling temp.	24.68 (6.52)	Boiler lose [ltr (gal)]:	2.00 (0.53)
Postboil target gravity [SG]:	1.055	mash items only	1.055

Style: 15A. Weizen/Weissbier

Description:

More wheat in this Hefeweizen, and continue testing with 3638. The search continues for the right malt bill for a fantastic hefeweizen.

Estimated Original Gravity[SG]: 1.055	Estimated Final Gravity[SG]: 1.015	Alcohol By Volume[%]: 5.38
Bitterness [IBU]: 10.00	Colour [SRM(EBC)]: 3.34 (6.58)
Balance: 0.362	BU:GU ratio: 0.182

Mash schedule

Name	Type	Temperature [C (F)]	Time [Minutes]
Acid Rest	infusion	35.00 (95.00)	5
Ferulic Acid Rest	infusion	43.00 (109.40)	15
Sacchrification	infusion	65.00 (149.00)	60
Thick Decoction 1/3	decoction	65.00 (149.00)	10
Heat Decoction	direct	70.00 (158.00)	10
Heat Decoction	direct	100.00 (212.00)	30

Fermentables

Type	Gravity [SG]	Gravity(%)	Weight [gms (lbs)]	Weight(%)
Pilsner Pale Malt (Barrett Burston)	1.020	36.36%	2100.84 (4.63)	36.95%
Wheat Malt (Barrett Burston)	1.035	63.64%	3584.55 (7.90)	63.05%

Hops

Hop Utilisation Method: Tinseth

Type	AA(%)	IBU	IBU(%)	Weight [gms (oz)]	Time(minutes)
Czech Saaz	3.20%	5.00	50.00%	16.79 (0.59)	60.00
Hallertau Hersbrucker	2.30%	5.00	50.00%	30.39 (1.07)	30.00

Yeast

Type	Flocculation	Attenuation	Min Temp[C (F)]	Max Temp[C (F)]	Alcohol Tolerance
Bavarian Wheat - Wyeast 3638	low	73.00%	18.00 (64.40)	24.00 (75.20)	10% ABV

Estimated required yeast cells (billion):

210.00

Dried yeast (gm):	11.17

No of liquid yeast(Wyeast/Whitelabs) packs:	2.23	(Assumes 94% viability)

Approximate amount of solid slurry (ml):
One hour settling	297.87	(Assumes 25% trub and 94% viability)
One day settling	148.94	(Assumes 25% trub and 94% viability)
Longer than 1 week settling	77.78	(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]
Acid Rest	Infusion	35.00 (95.00)	5	8.53 (2.25)	38.83 (101.89)	1.50
Ferulic Acid Rest	Infusion	43.00 (109.40)	15	1.31 (0.35)	95.00 (203.00)	1.73
Sacchrification	Infusion	65.00 (149.00)	60	7.22 (1.91)	95.00 (203.00)	3.00
Thick Decoction 1/3	Decoction	65.00 (149.00)	10	0.00 (0.00)	100.00 (212.00)	3.00
Heat Decoction	Direct	70.00 (158.00)	10
Heat Decoction	Direct	100.00 (212.00)	30

Mash Details

Mash water required [ltr (gal)]:	17.06 (4.51)	Mash tun volume required [ltr (gal)]:	25.89 (6.84)
Grain Weight [gms (lbs)]:	5685.39 (12.53)	Mash gravity @ 100% conversion [SG]:	1.053

Number of batches:

General:

Minimum required efficiency:	75.00 %	Max expected efficiency	83.08 %

Sparges:

Sparge No	Water addition [l]	Expected recovered volume [l]	Required gravity	Max expected gravity
1	5.03	13.00	66.68	78.68
2	13.00	13.00	27.43	32.36
Combined	18.03	26.00	47.06	55.52

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