Weizenbock help

[johngie]

A friend and I are planning a Weizenbock in a couple of weeks and I have a few questions.

With 7.5kg of grain, brewsmith is telling me to mash in with 19.5L of water, mash-out with 11L and sparge with 3L... It it really worth it to sparge with only 3L of water? Is it going to do anything?

As this beer is pretty much the first runnings of the mash, could I add another 25-30L of water (maybe throw in some more grain) and make a second smaller beer off the second runnings (kind of a parti-gyle). Maybe add some DME or Wheat LME to the boil if the pre-boil OG is too low?

Any one have a suggestion?
Thanks,

Recipe: Weizenbock
Brewer:
Asst Brewer:
Style: Weizenbock
TYPE: All Grain
Taste: (35.0)

Recipe Specifications
--------------------------
Batch Size: 18.93 L
Boil Size: 25.88 L
Estimated OG: 1.085 SG
Estimated Color: 16.6 SRM
Estimated IBU: 19.7 IBU
Brewhouse Efficiency: 70.00 %
Boil Time: 90 Minutes

Ingredients:
------------
Amount Item Type % or IBU
4.00 kg Wheat Malt, Bel (2.0 SRM) Grain 53.33 %
2.00 kg Pilsner (2 Row) Bel (2.0 SRM) Grain 26.67 %
1.00 kg Munich Malt (9.0 SRM) Grain 13.33 %
0.25 kg Caramel/Crystal Malt - 40L (40.0 SRM) Grain 3.33 %
0.25 kg Special B Malt (180.0 SRM) Grain 3.33 %
28 gm Hallertauer [4.80 %] (60 min) Hops 19.7 IBU
1 Pkgs Weihenstephan Weizen (Wyeast Labs #3068) [Yeast-Wheat


Mash Schedule: Single Infusion, Medium Body
Total Grain Weight: 7.50 kg
----------------------------
Single Infusion, Medium Body
Step Time Name Description Step Temp
60 min Mash In Add 19.50 L of water at 166.0 F 154.0 F
10 min Mash Out Add 11.00 L of water at 196.4 F 168.0 F

 

[944play]

It it really worth it to sparge with only 3L of water?

I don't think so. I'd go no-sparge if you want to use the planned liquor-to-grist ratio and you need to infuse to reach mashout temp.

I don't think you'd get much worthwhile out of second runnings. If you want to do a partigyle, scale up the recipe.