Yeast

[windy]

Hi All
I been using Voss Kviek yeast a few times, as you all know its very fast, but I dont like the side tastes that come with it .
I was recommended Saflager s-189 so Ive tried it and it finished fermenting in 4 days Fg 1.000 from SG 1.046.
Is that normal to finish so quickly ? bearing in mind I live in thailand and I struggle to keep the wort cool its always around 24c.
best regards
Windy

 

[Minbari]

Some yeast will finish that fast with the right conditions. I have had us-05 go that fast. But remember there are other processes going on even after the FG is hit. Let the yeast finish up before bottling. I always give it at least a week to 10 days

 

[Zambi]

That seems very low!
I don't know that specific yeast though. But a hydrometer reading of 1.000 would mean no sugar left at all. Sounds more like a wine reading.
Could you have an infection? Or faulty hydrometer?

 

[dmtaylor]

Wow, that is very fast and very low FG. My guess is contamination by something other than S-189. Have you brewed any Belgian style beers recently?

 

[Steve Ruch]

I've never had S-189 finish anywhere close to that low.

 

[Steve Ruch]

I've never had S-189 finish anywhere close to that low.

Looking back over the past two years I did have one batch end at 1.008 and one at 1.007. All the rest were 1.010-1.012.

 

[windy]

Some yeast will finish that fast with the right conditions. I have had us-05 go that fast. But remember there are other processes going on even after the FG is hit. Let the yeast finish up before bottling. I always give it at least a week to 10 days

thank you ,I will wait another week as you say

 

[windy]

Wow, that is very fast and very low FG. My guess is contamination by something other than S-189. Have you brewed any Belgian style beers recently?

no i sterlize all equipment with the fermenting bucket and sanitize it, Idont know how it has been contaminated, ,but I ll find out when i next open the bucket for bottling the brew

 

[windy]

That seems very low!
I don't know that specific yeast though. But a hydrometer reading of 1.000 would mean no sugar left at all. Sounds more like a wine reading.
Could you have an infection? Or faulty hydrometer?

i ll check with another hydrometer

 

[GFHomebrew]

Time for a taste test.
At 24c that yeast would of been hooking along.
At that low FG yup be nervous on contamination as others have said.

Have a taste and let us know what you think.

 

[Ward Chillington]

At 24 C, 75ish F, you may on the high side for an ale yeast where you will get a quick fermentation but fusells and other off flavors as well. I would stick with the kveik but maybe go with a different strain...I can't help to keep being impressed with the A44 blend that Imperial makes..it's very clean ....make use of your higher temps!

 

[Zambi]

At 24 C, 75ish F, you may on the high side for an ale yeast where you will get a quick fermentation but fusells and other off flavors as well. I would stick with the kveik but maybe go with a different strain...I can't help to keep being impressed with the A44 blend that Imperial makes..it's very clean ....make use of your higher temps!

I am in a similar temperature situation (except maybe more fluctuating) and I found a number of yeasts that should work. Mainly Belgians, not all diastatic, but also S33, S04 and T58

 

[Tim Bulin]

At that temperature, I would think 34/70 would be better. Mangrove Jacks M54/Mauribrew 497 would work fairly well. If you want to get away from kviek.

 

[Robert68]

You could also try pressure fermenting.....that will allow you to ferment at slightly higher temperature while minimizing off flavors (esters) from the yeast.