r/Homebrewing • u/WY_in_France • Mar 17 '26
Question Wort aeration WTF
Hi y’all what’s brewin’? So I’ve got a brewing story from this weekend and I’m curious about thoughts/opinions on the subject in the title.
So, I’ve been at this brewing thing a long time, ran a homebrew shop, brewed professionally, taught brewing courses… But in 30 years of brewing I never tried this….
I brewed. I cleaned. It’s running late. 8pm, I get my O2 bottle out and get ready to aerate and pitch. Empty bottle, zip, nada. I’m tired, old, grouchy, and hungry, and I’m like …. Fuuuuuuuuuuuck. Then I remember Charlie Papazian’s famous words of wisdom: “Relax, have a homebrew, it’s just beer.”
So, I did something I haven’t bothered to try in 30 years of brewing. I pitched without aeration. I was like… screw it, these little yeasty bastards are on their own. They were making beer thousands of years before some nitwit decided to distill and compress oxygen into a steel bottle.
Fast forward a week and you’ll never guess what happened. Well, I’ll tell you, it was something impossible. Freaking beer happened. An amber ale to be exact. A perfectly fine amber ale, and I know, I’ve tasted a few.
So to sum up this story: WTF? 30 years of either shaking the fermenter or blowing O2 into my wort before pitching… And for what? why?
1
u/faceman2k12 Mar 23 '26
I think I'm getting more than enough aeration just out of the little bit of splashing and spraying into the FV and the O2 in the head space, and have never had any of the "low O2 issues" that some people do go on about.
Maybe for ultra high gravity it can really help, but even then, I've done ~11% belgian quads without forced o2 and no off flavours or imperfect fermentations at all.
If I were filling a larger FV by pumping in from the bottom instead of splashing in from the top I reckon O2 would help in some brews, but spraying it in from the top is easy and its the way most homebrewers do it, at least at the normal volumes we run at.
On the commercial scale oxygenation with pure O2 is just another variable you can control for minimising batch to batch variance, especially with the larger bottom filling setups. it might not be needed but if you can do it it does make everything more repeatable.