Questions for Planning First Pressure Fermented Lager

HomeBrewTalk.com - Beer, Wine, Mead, & Cider Brewing Discussion Community.

Help Support Homebrew Talk:

csample

Member
Joined
Jan 8, 2021
Messages
18
Reaction score
6
Location
Green Bay
Hi!

I am planning to brew my first pressure fermented lager this weekend and need help sorting out my plan.

Base recipe is Marzen from "Brewing Classic Styles" by Zainasheff and Plamer. I will be brewing a 1/2 batch.

I will be using Saflager S-23 yeast, and fermenting in my 60 degree basement (I don't have the ability to chill cooler in a controlled fashion hence the pressure fermentation). I expect this will produce a maximum temperature of ~65 deg. during active fermentation.

Question 1 - Given this fermentation temperature, should I pitch the yeast at an ale pitching rate of 5.5g into 2.5 gallons or should I use the lager rate of 11g into 2.5 gallons?

To achieve the pressurized fermentation I plan to initially charge my 3 gallon keg to 15 psi using my CO2 tank and regulator and then change to a spunding valve and bleed down to 10 psi for the duration of the fermentation. I am not yet equipped to either bottle carbonated beer or serve from the keg, so after two weeks of pressurized fermentation I plan to relieve the pressure, add fining gelatin, pressurize to a few psi and cold crash using outdoor ambient temps in the 30-40's. I will keep the beer in these outdoor ambient temperatures for 2-3 weeks for "lagering" but I am sure that there will be some warmer days and colder nights mixed in. I know this is not ideal, but hope that it will be acceptable.

Question 2 - Any problems with my plan for fining and cold crashing?

Question 3 - Will the daily temperature variations be a problem for the "lagering"?

Question 4 - Are there any unique sanitizing requirements for fermenting in a Keg? I plan to fully disassemble and sanitize all the posts, PRV and o-rings with StarSan. Is this good enough?

All suggestions and thoughts are welcome!

Thanks!
 
OP
csample

csample

Member
Joined
Jan 8, 2021
Messages
18
Reaction score
6
Location
Green Bay
Thanks balrog, searching the last post you mentioned answers my question about the pitching rate. It looks like I can use the higher lager pitching rate (1 pack per 2.5 gallons) without negative consequences.
 
Top