Never done a Decoction mash before. Please critique this - I really want to make sure I get this right (and not just the decoction part - feel free to tear up the recipe itself if you see fit). I have some questions below as well. Here is the recipe:
malt and fermentables
% LB OZ Malt or Fermentable
37% 7 0 Vienna Malt
32% 6 0 Pilsner (2 Row) Ger
16% 3 0 Munich Malt
5% 1 0 Dark Munich
4% 0 12 Caramunich Malt 70L
3% 0 8 Melanoiden Malt
3% 0 8 British Crystal 135-165L
Total 18 12
(1.073 to 1.085)
(1.019 to 1.024)
(Light Brown to Medium Brown)
60% (I know this is low, but I want to err on the side of caution - especially since I got 65% with my last high gravity beer, which was single infusion)
Batch size 5 gallons
7 Gallon boil for 2 hours
use time oz variety
Boil 90 mins 1.0 Mount Hood
Boil 15 mins 1.0 Mount Hood
271 per 12 oz.
WLP 833 German Bock Lager
Approx 10 days with 2 oz oak chips in secondary before bottling
Hochkurz Double Decoction Method
used: decoction volume = total mash volume x (target temp - start temp) / (boil temp - start temp). Also, upped all volumes by 20% to be safe on hitting temp.
1) Strike in to mash temp of 133F (6.25 gallons at 145F). Wait 30 minutes.
2) Pull (thick) decoction (1.25 gallons). Heat to 160F, rest for 20 min.
3)Heat decoction to boiling. Boil for 15 min.
1 HR 30 MIN POINT
4) Return decoction to mash for rest at 146F for 30 min.
5) Pull decoction (1.75 gallons). Heat to boiling for 10 min.
2 HR 30 MIN POINT
6) Return decoction to mash for rest at 160F for 60 min
7) Pull (thin) decoction (1.66 gallons) and bring to 185F before returning to mash for 10 minute mash out.
UNLESS - anyone can tell me how much water and at what temp I would need to add to reach 170F for mash out so I don't have to do another decoction.
4 HR POINT
Batch Sparge with 166F 4.25 gallons of water to reach 168F for 20 minutes.
Boil for 2 hours
LASTLY - this is my first lager. I have the ability to control temp at lager temps, but I am unfamiliar with how to lager a beer. Primary will be at 48 and slowly bumping it up all the way to 55 to finish out over a 2 week or so period I assume (correct me if I am wrong). How long do I lager this and at what temperature though?