Krausening

How are you fermenting?

Moderator: Brandon

User avatar
Weizenberg
German Brewing
Posts: 843
Joined: Wed Nov 11, 2015 2:11 pm
Contact:

Re: Krausening

Postby Weizenberg » Sat Jun 04, 2016 6:43 pm

Why do you want to do that as a home brewer? What do you gain from Drauflassen? Can you do a second brew 3 days later and guarantee that the new wort you pitch on top is at the right temperature?

Drauflassen only makes sense when you make larger batches and at regular intervals.
The Quest for Edelstoff - http://edelstoffquest.wordpress.com
User avatar
Brody
Assistant Brewer
Posts: 326
Joined: Sat Nov 14, 2015 11:30 pm
Location: Philadelphia, Pennsylvania

Re: Krausening

Postby Brody » Sun Jun 05, 2016 10:26 am

Weizenberg wrote:Why do you want to do that as a home brewer? What do you gain from Drauflassen? Can you do a second brew 3 days later and guarantee that the new wort you pitch on top is at the right temperature?

Drauflassen only makes sense when you make larger batches and at regular intervals.



My first (and only) go at it was motivated by trying to solve a problem rather than seeking benefits. Normally I brew outdoors on propane with a 10-gallon boilermaker but on brew day it was raining. I was able to borrow a friends 5-gallon kettle which works well on a stovetop but that left me with a brewhouse capacity about half of my fermenter capacity.

I had read about Drauflassen before from Kai and your blog as well. It solved two problems for me – the capacity issue while also allowing me to pitch enough cells using less yeast packs (as I had no previous lager yeast stored).

Correct me if I’m wrong, but, the blogs quoted Narziss when stating that drauflassen was beneficial for attenuation (I got 82% on that batch) and ester reduction. But my primary motive was solving the space issue.

As a renter I tend to move around a lot so the ability to dial in a system that doesn’t require a backyard or a larger indoors electric brewhouse is appealing. With such a small batch size cooling is much quicker and easier so getting batch x2 down to the right temp was doable just using an ice batch in my sink. Also, since I'm able to work from home a lot I'm able to brew during weekdays easier.
User avatar
Weizenberg
German Brewing
Posts: 843
Joined: Wed Nov 11, 2015 2:11 pm
Contact:

Re: Krausening

Postby Weizenberg » Tue Jun 07, 2016 6:23 am

Yes. Effectively the fermenter becomes a starter. There are a few restrictions though, one should not do it too often (3 times) otherwise there will be a noticeable quality drop. The other one is more important: you need to pitch the wort at the right lager temperature (can you do that?) and when the yeast is at peak log phase (again, are you sure you can do another brew timely enough?)
The Quest for Edelstoff - http://edelstoffquest.wordpress.com
User avatar
Brody
Assistant Brewer
Posts: 326
Joined: Sat Nov 14, 2015 11:30 pm
Location: Philadelphia, Pennsylvania

Re: Krausening

Postby Brody » Tue Jun 07, 2016 11:08 am

Temp is no problem with small batches since it's pretty easy to chill down a couple gallons in an ice bath.

Timing wise, I dunno how precise it is but last time I pitched after 2 days and the first batch appeared to be at high krausen.

Today the weather is nice so I'm brewing a full size batch outside. Going to try out the yeast 02 scavenge instead of pre-boiling.
User avatar
Brandon
German Brewing
Posts: 554
Joined: Tue Oct 13, 2015 8:38 pm
Location: Pennsylvania, USA
Contact:

Re: Krausening

Postby Brandon » Tue Jun 07, 2016 11:11 am

Brody wrote:Temp is no problem with small batches since it's pretty easy to chill down a couple gallons in an ice bath.

Timing wise, I dunno how precise it is but last time I pitched after 2 days and the first batch appeared to be at high krausen.

Today the weather is nice so I'm brewing a full size batch outside. Going to try out the yeast 02 scavenge instead of pre-boiling.


Cool, post how it goes! I might brew tomorrow. It's a beautiful day today...but supposed to be cooler tomorrow.

Who is online

Users browsing this forum: No registered users and 0 guests