Coopers Yeast

[therook]

Does anyone know if coopers use the same yeast for all there beers.

I'm currently brewing Warrens "Three Shades Of Stout" using US56 and was thinking of doing it next time with a recultured Pale Ale yeast that i have or would it be better to buy a 6 pack of there stout.

thanks

Rook

 

[warrenlw63]

G'day Rook

All Coopers yeasts are same in the bottle. Important part is to try and find a bottle of Coopers that's freshest. They turn over more Pale Ale and Sparkling than anything I'd say.

All should work fine though. Enjoy the stout. Got me thinking about another one. :beerbang:

Warren -

 

[boingk]

What is the Coopers yeast strain exactly? I'm just wondering out of curiosity really, also because I want an excuse to go down and buy a bottle for cuturing, haha. That, and a Heineken for later comparison with my clone attempt.

So is it a recognised strain, or an in-house?

 

[agraham]

I would agree with you Warren, the fresher the better. The other bonus is you get beer to drink as well as the yeasties at the bottom.

 

[drsmurto]

My understanding is that its actually 2 strains? Not sure where that came from. Its sold by whitelabs as WLP009?

 

[piraterum]

I recently had a job interview for a position with a yeast research company who had previously worked with Coopers on yeast strain development. So naturally I had to ask this question!

Apparently the yeast used for the Pale Ale is different to the yeast used for the Sparkling Ale. Interestingly they are both mixed strains.

 

[Pandreas]

Most information I have read is that the yeasts are certainly the same!

I had however always suspected that the yeasts used by Coopers are different in their Pale Ale and the Sparkling...

They always tasted very different to me. Also, it is notoriously difficult to culture a yeast from a bottle of sparkling whereas a Pale Ale yeast is quite easy to culture from. (Many say this is due to the higher alc% of sparkling)

Piraterum, it's good to hear from those who should know that the yeasts are actually different. Might have to call Coopers directly to settle the issue in my mind once and for all!

 

[Stuster]

Apparently the yeast used for the Pale Ale is different to the yeast used for the Sparkling Ale. Interestingly they are both mixed strains.

That's very interesting info, piraterum. :super:

So that would explain some differences in use between culturing from pale or sparkling, and why White Labs Australian Ale (WLP009, supposedly Coopers) behaves differently as well. Do you know how many strains there are? Do you know about any of their other beers?

 

[paul]

Ive been wondering about the pale vs sparkling ale yeast a bit lately.

When you pour out a pale the yeast is mixed well and cloudy

When you pour a sparkling the yeast is flakey in appearance and will settle on the bottom.

 

[Mr Bond]

Brewed with both,and they both throw a s#*t load of diacetyll early on in conditioning.
Same, different or just a seeded bottling strain that behaves differently with higher alc %ages.
Heaps of banana above 18c.
I'm with Darren on the bottling strain theory these days h34r:

 

[piraterum]

I forgot to ask about the Stout!

Coopers provided them with the yeast cultures for the Pale Ale and the Sparkling Ale. They provided very little information as to the source of the yeast, I imagine they wanted to keep such information under wraps.

They performed PCR and found there were significant genetic differences between the two. They performed some genetic screening and found multiple strains were present in each of the cultures. The project was mainly to improve the efficiency of the yeast.

It's interesting how fundamental a yeast is to a particular flavour, and therefore why companies are so paranoid about other companies "stealing" their yeast. Some companies pasteurise the beer to kill the yeast. Others pasteurise the beer then add a bottling strain to complete carbonation/bottle conditioning. And some just say they do the above to stop people from trying!

I've found the sparkling easy to culture from a bottle actually, i've done it a few times with a 100% success rate (touch wood!) so far. I made a starter just the other day from one longneck which was 3 months past the best after date on the bottle. As long as you make up the starter properly, I find after a few days it's bubbling away like a V8 ready to tear up a race track :super: