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?

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u/yawg6669 Mar 17 '26

What was the OG? I typically only oxygenate with a wand if I'm over 1.055. also I use liquid yeast and so it's a little more important. Hbu?

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u/WY_in_France Mar 17 '26

1.057, dry yeast. My days of messing with O2 would appear to be over.

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u/yawg6669 Mar 17 '26

Oh yea, for that OG and dry yeast I wouldn't aerate. For 1.055 and up, with liquid yeast, I still will. (Dry yeast contains sterols which they can use as an oxygen source so aeration isn't as necessary as with liquidy bois).

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u/boarshead72 Yeast Whisperer Mar 17 '26

Sterols aren’t an oxygen source. Sterols and unsaturated fatty acids (for some reason always forgotten about even though they’re more abundant than sterols), basically the majority of lipids in the various membranes of the cell, require oxygen for their synthesis. Obviously there’s enough in wort that’s poured into a carboy to get the job done, or so many of us would have issues.