2 yeasts at once

[Squirrel442]

I done a coopers IPA and wanted to try this yeast I bought which was a 'Crossmyloof Brewery US Pale Ale yeast' I popped up stairs and came down pitched the re-hydrated yeast and closed everything. Upon discussing this brew with my partner I found out she pitched the Coopers Yeast when I wasn't there. The air lock started going after 4 hours but my question is, what will all that yeast do to the beer?

TL*DR - what will 2 yeasts at once do to my IPA?

 

[dmfcb750]

The american ale yeast will yield a very clean fermentation. Not very manynyeast related flavors.

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[Squirrel442]

The american ale yeast will yield a very clean fermentation. Not very manynyeast related flavors.

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Well that's good, I thought with the Coopers Yeast and the ale yeast I would get a random flavour. But if I get no off flavours that will do me. Do you know if the Coopers Yeast is any good? I'm always told to buy yeast as coopers is not good enough.

 

[dmfcb750]

I have used it before and liked the results.

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[Gunge]

I've used a pack of CML Real Ale and a pack of CML Belgian in the same brew. Turned out splendid but of course I don't know how it would have been if I'd used one of either.

 

[Graz]

I've only done it the once, a Coopers Stout which I made to quite a high gravity by using treacle and a can of dark LME. I lobbed both Coopers yeast in and a CML ale yeast (supposed to be high attenuating like a Nottingham) and I thought it needed all it could take to eat through the sugar. Turned out okay but then the other flavours dominated over whatever the yeast might have imparted.

 

[MyQul]

I would say nothing will happen (or next to nothing) . The CML USP is a fairly clean ale yeast and iirc so is the coopers one. If you fermented at the warm end of the scale for ale yeasts, you may get a few esters and you'll probably get different ones from the CML yeast and the coopers but nothing untoward, it just wont be as clean as a cooler fermentation. The coopers yeast is also pretty heat tolerant, not so sure about the CML USP as I've never used it before.
Also chucking in loads of yeast retards ester production (it's a little trick you can use if you want a cleaner ferment but have not temp control), so seeing as theirs been two packs added to the brew, I think you should be fine overall