Brew Day: Duvel clone-July 18, 2012

Brewday: Duvel clone - July 18, 2012

Recipe Values:

Volume to fermenter[ltr (gal)]:	23.00	Total volume[ltr (gal)]:	26.72	Losses [ltr (gal)]:	3.72
Original Gravity[SG]:	1.078	Colour [SRM(EBC)]:	5.07(9.99)
Mash Efficiency [%]:	75.00%	Bitterness[IBU]:	34.27

Preboil Values:

Mash water volume [ltr (gal)]:	20.12 (5.31)	Mash tun volume [ltr (gal)]:	29.44 (7.78)	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]:	1.078	mash items only	1.057

Style: 18C. Belgian Tripel

Description:

Yeast recommended to be re-cultured from a bottle of Duvel

Estimated Original Gravity[SG]: 1.078	Estimated Final Gravity[SG]: 1.014	Alcohol By Volume[%]: 8.56
Bitterness [IBU]: 34.27	Colour [SRM(EBC)]: 5.07 (9.99)
Balance: 1.062	BU:GU ratio: 0.438

Mash schedule

Name	Type	Temperature [C (F)]	Time [Minutes]
Sacchrification	infusion	65.50 (149.90)	90

Fermentables

Type	Gravity [SG]	Gravity(%)	Weight [gms (lbs)]	Weight(%)
Aromatic Malt	1.001	1.73%	159.78 (0.35)	1.92%
Candi Sugar, Clear	1.007	9.19%	636.29 (1.40)	7.64%
German Light Crystal	1.003	3.42%	325.21 (0.72)	3.90%
Pilsner (2 Row) Bel	1.053	67.39%	6221.49 (13.72)	74.66%
Sugar, Table (Sucrose)	1.014	18.27%	989.78 (2.18)	11.88%

Hops

Hop Utilisation Method: Tinseth

Type	AA(%)	IBU	IBU(%)	Weight [gms (oz)]	Time(minutes)
Styrian Goldings	5.25%	28.35	82.72%	80.60 (2.84)	60.00
Czech Saaz	3.75%	2.47	7.20%	19.80 (0.70)	15.00
Styrian Goldings	5.25%	3.46	10.08%	19.80 (0.70)	15.00
Styrian Goldings	5.25%	0.00	0.00%	19.80 (0.70)	0.00

Yeast

Type	Flocculation	Attenuation	Min Temp[C (F)]	Max Temp[C (F)]	Alcohol Tolerance
Belgian Golden Ale - WLP570	Low	75.50%	20.00 (68.00)	23.89 (75.00)	High

Estimated required yeast cells (billion):

337.14

Dried yeast (gm):	17.93

No of liquid yeast(Wyeast/Whitelabs) packs:	3.59	(Assumes 94% viability)

Approximate amount of solid slurry (ml):
One hour settling	478.21	(Assumes 25% trub and 94% viability)
One day settling	239.10	(Assumes 25% trub and 94% viability)
Longer than 1 week settling	124.87	(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	65.50 (149.90)	90	20.12 (5.31)	71.58 (160.85)	3.00

Mash Details

Mash water required [ltr (gal)]:	20.12 (5.31)	Mash tun volume required [ltr (gal)]:	29.44 (7.78)
Grain Weight [gms (lbs)]:	6706.48 (14.79)	Mash gravity @ 100% conversion [SG]:	1.057

Number of batches:

General:

Minimum required efficiency:	75.00 %	Max expected efficiency	82.47 %

Sparges:

Sparge No	Water addition [l]	Expected recovered volume [l]	Required gravity	Max expected gravity
1	4.82	14.50	69.54	81.02
2	14.50	14.50	29.12	33.92
Combined	19.32	29.00	49.33	57.47

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