rousing yeast really works

[svenito]

My fermentation slowed somewhat after 4 days, so I decided to give the FV a quick swish around and now it's bubbling like it did at the start.

Can only recommend to give your FV a slosh around if you feel your fermentation has slowed but not finished.

Thanks to this forum for the idea

 

[terrym]

Good to hear. I read on here some time ago it's something to do with getting any settled live yeast back into suspension where it can perform better, away from any dead cells that have settled around them in the trub. Wherther that's true or not I have no idea!
Anyway more stuff here
Simple strategies for dealing with stuck fermentations

 

[MyQul]

Yup, rousing defiantely works. Yeast cant ferment the wort if it's chillaxing on the bottom of the FV. It has to be in suspension to work properly. My house yeast is the Gales strain which can be a bit of lazy bugger (bit like me really) and benefits from a rouse or two during fermentation as it's so flocculant and drops out of suspension easily

 

[svenito]

Yup, rousing defiantely works. Yeast cant ferment the wort if it's chillaxing on the bottom of the FV. It has to be in suspension to work properly.

I expected it to work for that reason, just wasn't expecting it to work so well. I'm gonna do the shake and ferm from now on. Except maybe with low flocculant yeasties

 

[MrRook]

It depends a lot on the yeast strain. Quick flocculaters like WLP002 can drop out way too quickly.

 

[svenito]

K-97 seems to be flocculating quite rapidly too.

 

[BREWERS DROOP]

I roused the yeast on my last 3 brews using the Ringwood ale yeast, every day after the first 7 days,works really well.

 

[cheshirehomebrew]

Have never tried this on mine but will bear it in mind if it ever slows, its hard to tell with mine sometimes as I ferment around the 14/15 degree mark with US-05 so its a slow process anyway

 

[Covrich]

Yeah sometimes gently tipping/ rocking or gyrating the fermenter can get the bubbles going again

 

[chesters-mild]

Rousing the beer was standard practice in breweries years ago, not sure it is so today though.
Cheers

 

[BeerisGOD]

Yeah sometimes gently tipping/ rocking or gyrating the fermenter can get the bubbles going again

I might stir myn later. Got the temp up gradually yesterday so should help with the dormant yeast. Rather stir now and allow another two weeks to clean up and settle out.

 

[MmmBeer]

I'm always nervous about opening the FV too much during fermenting, but have tried giving it a good slap from underneath a few times, that seems to re-awaken things, might try a stir sometime, when I get another stall.