Acetaldehyde

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Tezz

Active Member
Joined
Jan 12, 2021
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So I have just took my 3rd gravity reading from Geordie lager bew. Day 12.

Gravity has gone from OG 1.038 down to 1.003.

First time a took the gravity it tasted like lager now on the 3rd taste I am getting the Acetaldehyde flavour - apples / cider taste

Is my brew ruined?
 
Just to note -

The brew has been kept at 20-21 degrees for the duration.

The only thing that has changed is I took a sample for gravity on day 10 via the tap - so unless this has caused oxygen to get in.

Hopefully once i bottle tomorrow I will get my lager back :) might just have to condition for longer.
 
so unless this has caused oxygen to get in.
Taking a sample from the tap wouldn't cause too much oxygen to get in - at any rate, the CO2 is heavier than air so sits as a protective blanket over the beer.

See what it's like when you bottle tomorrow. As you say, it might clean up with time.
 
I have decided to leave it til the weekend before a bottle it now in the hope that it clears somehow :)

I think its reached its final gravity as its been 1.003ish for the last 3 days, but it will be much warmer in the fermenter as my house is like a ice box.
 

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