Acetaldehyde

[Tezz]

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?

 

[Tezz]

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.

 

[iz_g]

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.

 

[Tezz]

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.