Batch 146, Leeser

Continuing to fine-tune this recipe. I switched from qbrew to BrewTarget, which puts out this nice html. For this batch, I did a double decoction mash, and used a lot more Saaz for finishing hops. Also, the Magnum I used for bittering is FWH. So just two hops additions, the Magnum at FWH, and the Saaz at 5 minutes.

Style	Bohemian Pilsener	Date	Sat Nov 2 2013
Boil Time	90.000 min	Efficiency	70
Boil Volume	12.588 gal	Preboil Gravity	1.052
Final Volume	10.088 gal	Starting Gravity	1.054
IBU	37.9	Final Gravity	1.014
ABV	5.3%	Estimated calories(per 12 oz)	179

 

Fermentables

Total grain: 23.000 lb

Name	Type	Amount	Mashed	Late	Yield	Color
Pilsner (2 Row) Ger	Grain	20.000 lb	Yes	No	81%	2.0 srm
Cara-Pils/Dextrine	Grain	1.000 lb	Yes	No	72%	2.0 srm
Munich Malt - 10L	Grain	1.000 lb	Yes	No	77%	10.0 srm
Vienna Malt	Grain	1.000 lb	Yes	No	78%	4.0 srm

Hops

Name	Alpha	Amount	Use	Time	Form	IBU
Magnum	13.5%	1.500 oz	First Wort	90.000 min	Leaf	31.9
Saaz (USA)	3.8%	6.000 oz	Boil	5.000 min	Leaf	6.0

Misc

Name	Type	Use	Amount	Time
Irish Moss	Fining	Boil	1.000 tsp	15.000 min

Yeast

Name	Type	Form	Amount	Stage
Wyeast 2124 - Bohemian Lager	Lager	Liquid	0.528 cup	Primary

 

 Instructions

Completed	Time	Step
	--	Add grains : 20.000 lb Pilsner (2 Row) Ger, 1.000 lb Vienna Malt, 1.000 lb Cara-Pils/Dextrine, 1.000 lb Munich Malt - 10L
	--	Heat water : 8.615 gal water to 132.954 F, 6.963 gal water to 181.068 F
	75.000 min	Infusion - Protein : Add 8.615 (who can measure this accurately? I eyeballed 8.75 gallons) gal water at 132.954 F (135F actual) to mash to bring it to 121.000 F (125F actual). Hold for 10.000 min. Adjust pH to 5.2.
	55.000 min	Decoction - Beta : Pull 3.401 gallons of thick part of mash (~10 qts actual, I mis-converted gallons to quarts, but it worked out okay). Heat to 147F, hold 10 minutes. Note this means the main mash is holding for 20+ minutes for the protein rest. Bring to a boil and return to the mash tun to bring main mash to 147.000 F (149F actual, not bad). Check pH.
	35.000 min	Decoction - Alpha : Rest 10 minutes. Pull 2.918 gal of the thick part of the mash (did about 10 qts again). Heat to 158F, hold 10 minutes. Bring to a boil and return to the mash tun to bring it to 158.000 F (157F actual, pretty decent). Check pH. Rest 20 more minutes. Iodine test shows conversion complete after 15 minutes, so drained to boil kettle. Note that FWH are already in the kettle.
	15.000 min	Infusion - Batch Sparge : Add 6.963 gal water (7.5 gallons actual to hit 12.5 in BK, but actually ended up with 13 gallons in BK) at 181.068 F to mash to bring it to 165.000 F. Hold for 15.000 min. Adjust pH to 5.2.
	--	First wort hopping : Do first wort hopping with 1.500 oz Magnum. Record pre-boil SG and pH.
	90.000 min	Start boil : Bring the wort to a boil and hold for 90.000 min.
	15.000 min	Misc addition : Put 1.000 tsp Irish Moss into boil for 15.000 min.
	5.000 min	Hop addition : Put 6.000 oz Saaz (USA) into boil for 5.000 min.
	--	Flameout : Stop boiling the wort.
	--	Post boil : You should have 11.088 gal wort post-boil (forgot to measure). You anticipate losing 1.000 gal to trub and chiller loss. The final volume in the primary is 10.088 gal (close enough, looks like 10 gallons even to me). Record SG (1.052) and pH (5.23).
	--	Pitch yeast : Cool wort, oxygenate (60 seconds in each fermenter), and pitch Wyeast 2124 - Bohemian Lager Lager yeast, to the primary.
	--	Ferment : Let ferment until FG is 1.014. See recipe notes.
	--	Transfer to secondary : Transfer beer to secondary.

Actual PreBoil Volume:	13 gallons	Actual PreBoil Gravity:	1.052
PostBoil Volume:	???	PostBoil Gravity:	1.055
Volume into fermenter:	5 gallons in 2 fermenter buckets.

Notes

Ferment 12 days at 50F
Raise to 65F, hold for 1 day
Rack to kegs Lager 40 days at 34F
Without moving lager kegs, rack to new kegs
Prime with 2.25 oz table sugar per keg
Ready to drink in 14 days