Effects of grossly over pitching yeast ?

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HerrBrauer
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Re: Effects of grossly over pitching yeast ?

Postby HerrBrauer » Wed Sep 06, 2017 2:33 pm

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Ancient Abbey
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Re: Effects of grossly over pitching yeast ?

Postby Ancient Abbey » Wed Sep 06, 2017 2:42 pm

Depends on the concentration and yeast strain. Over 75mg/l and one can experience a 2-4 pt difference between the FFT and batch EVG. In this case, we're trying to solve a problem through the process of elimination.
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Nick_D
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Re: Effects of grossly over pitching yeast ?

Postby Nick_D » Thu Sep 07, 2017 11:34 am

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Re: Effects of grossly over pitching yeast ?

Postby Ancient Abbey » Thu Sep 07, 2017 12:40 pm

- The best do the basics better -
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Weizenberg
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Re: Effects of grossly over pitching yeast ?

Postby Weizenberg » Thu Sep 07, 2017 2:18 pm

You may be better off aerating the yeast in a conical flask, then pitch that. If your yeast doesn't score high in viability and vitality, then the cold schedules can become tricky. You don't want to over-aerate either. That can have quite detrimental effects. Without a meter, you are flying blind. I use welding O2.
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Nick_D
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Re: Effects of grossly over pitching yeast ?

Postby Nick_D » Fri Sep 08, 2017 12:02 pm

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Weizenberg
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Re: Effects of grossly over pitching yeast ?

Postby Weizenberg » Fri Sep 08, 2017 2:47 pm

I use the original W34/70 from the laboratory in Weihenstephan, but also had great results with the Wyeast equivalent.

Nowadays I propagate on stir plates, then a quick burst of O2 into the flask and then pitch at 5Celsius for a slow rise to 7-8 degrees over the next two days.

I also quite like the W838 from White Labs, but you need to keep sulfites in check. Approx 20-25mgl.

I did write all that up on the blog. There you have the details on cell count etc... If anything is missing, let me know.
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Nick_D
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Re: Effects of grossly over pitching yeast ?

Postby Nick_D » Sat Sep 09, 2017 12:42 am

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Nick_D
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Re: Effects of grossly over pitching yeast ?

Postby Nick_D » Sat Sep 09, 2017 12:46 am

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Weizenberg
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Re: Effects of grossly over pitching yeast ?

Postby Weizenberg » Sat Sep 09, 2017 5:19 am

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