Double Xmas Elixir

When I make a double batch (a.k.a. 2x a beer) as opposed to a single, the same amount of heat is absorbed by the mash tun. This causes the temperature of the mash to be higher for the same temperature of mash-in water. I lower the mash-in temp water by a 2-5 degrees to obtain desired results. I probably should be pre-heating the tun, but I don't brew often enough to practice this part of the procedure and it works for me.

Batch #1 - Voss Kviek yeast - Pitch Temp 30 C
1 oz Simcoe

Batch #2 - Hothead ale Kviek yeast - Pitch Temp 30 C
1 oz Citra

Good and useful info on Kviek yeasts:

• Kviek needs yeast nutrient because of high free agent nitrogen usage https://www.escarpmentlabs.com/single-post/2019/10/20/Crispy-brewing-with-kveik
  
• FAN in wheat malt is lower than Pilsner (Slide 5) https://www.vikingmalt.com/wp-content/uploads/2015/06/Wheat-Malt-in-Brewing-2015.pdf
  
• Pitch rate doesn't matter, final pH in beer is lower for Kviek https://www.escarpmentlabs.com/single-post/2019/11/01/The-impact-of-pitch-rate-on-kveik-ferments
  
• FAN info in malts https://www.mdpi.com/2311-5637/5/1/22/pdf
  
• How to with Kvieks (temperature) http://www.garshol.priv.no/blog/393.html
  
• Yeast registry (pitch temperatures) -
  
  Malt variation notes:
  3.3 lbs red wheat
  1.2 lbs pale German wheat
  5 lbs pale Canadian wheat
  
  2+0.4 lbs GNO
  
  Brew notes:
  Pre-boil 1.043 collected 14 or 14.5 gal.
  OG 1.053 of 11.5 gal batch
  
  1 gal less on sparge... But temps were perfect.
  
  Fermentation schedule for this brew was:
  86F first 12 hrs, 90F for next 24 hrs