Home Brew Forums > Home Brewing Beer > General Techniques > Side by Side comparison: one carboy with trub, one without
Thread Tools
Old 08-03-2010, 07:02 PM   #1
Feedback Score: 0 reviews
Join Date: Dec 2007
Posts: 61
Liked 1 Times on 1 Posts
Likes Given: 1

Default Side by Side comparison: one carboy with trub, one without

I did a double batch of oktoberfest last weekend, i filled up two six gallon better bottles.

I whirlpooled. The first bottle: all clean wort. The second bottle: some trub toward the end (no hops though, just break material I'm pretty sure) entered bottle.

There has been a bit of discussion on these boards recently about the possible effects of break material on fermentation. So, inadvertently, I have the makings for a little experiment.

unfortunately, I brew at my parents house, but I don't live there, so the two batches have been doing their thing since last Monday without any supervision by me beyond daily descriptions from my dad via phone (not ideal!).

They are in two separate temp controlled mini-fridges, fermenting at 50, and since yesterday I did a diacetal (sp?) rest at 60.

things i don't know: which took off first. the general vigor of fermentation between the two.

results so far:

I returned home today to find that the clean batch is already finished, and that it blew off half a quart or so into the blowoff jar. The dirty batch is still chugging away, at what I would describe as a moderate tempo.

While some people may be inclined to think that the clean batch "won" so far I'm a little worried: I'm suspicious that it is finished because it didn't attenuate fully. And I'll bet that the dirty one finishes drier: after all they have been down for only 8 days, fermenting at 50 degrees, with a starting gravity of 1.055, so I'm a little surprised the one is finished. More so because the dirty one is still in full swing, milky looking with **** flying all around.

I will report back in another week with finishing gravities (what you really care about) and taste impressions.

pherball is offline
Reply With Quote
Old 08-04-2010, 02:29 AM   #2
Feedback Score: 0 reviews
Join Date: Aug 2009
Location: Twin Cities, MN
Posts: 2,507
Liked 33 Times on 33 Posts
Likes Given: 3


Cool experiment, looking forward to the results!
Itchy Dog Brewery.

(As of 10-24-2011)
Primary - Steppe 112 PA, 2x Monday RyePA
Aging - None :-(
On tap - Big Dog, Apfelwein, Steppe 112 PA

My invisible AG sculpture, with no actual sculpture and a tiny footprint.
My Kegerator goes offroading!
My Coors Home Draft dispenser for boating/beering on the go.
shortyjacobs is offline
Reply With Quote
Old 08-04-2010, 06:01 PM   #3
Feedback Score: 0 reviews
Join Date: Jun 2005
Location: Eugene OR
Posts: 4,506
Liked 514 Times on 379 Posts
Likes Given: 667


This experiment was done by a brewer on the Brews & Views board a couple years back. He made a pils and found that the batch with the trub ended up clearer and better tasting.
Life begins at 60....1.060, that is!


http://www.experimentalbrew.com - the website for the book "Experimental Homebrewing"...coming Nov. 2014
Denny is offline
Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Caramelization on the side One-Cheeked General Techniques 1 12-19-2009 05:04 PM
Side by side No Chill results Tonedef131 General Techniques 22 09-18-2009 09:24 PM
Hot Side Dry Hopping? MVKTR2 General Techniques 12 10-03-2008 02:33 PM
Hot Side Aeration Stevorino General Techniques 3 07-09-2008 01:56 PM
Can I use BBQ Side Burner? Orpheus General Techniques 6 08-15-2006 11:44 PM

Forum Jump