Aeration

[mst3k]

Just a quick Question,

I fill my primary brew bin with water using my bottle bucket at height. I let it dribble in and that causes tons of bubbles. Then I give the wort a good old "bad boy" stir, check the temp and pitch the rehydrated yeast, sorted, now I leave. But,

Should I Aeration the wort some more with the yeast just being added to the wort? or just mix the wort and yeast without aeration?

Just seen an experiment this on utube:
http://www.youtube.com/watch?v=A734B5E1C3U

What do you think?

Thanks

[mst3k]

If it's the one i'm thinking of

Its the video time lapse over 24 hours with 3 jars of the same wort with yeast but,

1 that is shaken
1 that has had o2 induced
1 that is been left

Thanks Daab

[eskimobob]

That's a great movie - not seen it before - good to see that my lack of enthusiasm for an O2 injection system is not causing my yeasties too much harm

[J_P]

I was just wondering why the wort aeration should have this effect on yeast? I have read somewhere (probably this forum) that brewers yeast will produce alcohol in both aerobic and anaerobic conditions.

Second question is:- I can understand you'd want to aerate any wort that has been boiled for any length of time as boiling removes gases dissolved in the water, but how come wort from kits needs to be aerated.

Not that this has stopped me aerating the wort before pitching the yeast, as per link supplied by Daab (what the kit's don't tell you).

I'm not questioning your advice I'm just curious that's all.

[J_P]

Ah I see - now I know why I whip both the wort (and myself in the process) into a lather before putting the yeast in.

Cheers

[james_m_r]

I have a large plastic spoon that I use for my aeration which is beginning to cause noticable damage to the side of the bucket in the form of stress marks. Is this a problem? Would I be better off with a paddle?

[Andy]

I have a large plastic spoon that I use for my aeration which is beginning to cause noticable damage to the side of the bucket in the form of stress marks. Is this a problem? Would I be better off with a paddle?

Try not to scratch the fermenter walls as scratches can harbour bacteria which could hide themselves away well enough such that your cleaning/sanitising routine might not kill them off.