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Old 08-18-2012, 07:03 PM   #1
dregus
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Default Too much yeast

Hat are the pitfalls of too much yeast being pitched?

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Old 08-18-2012, 07:50 PM   #2
inhousebrew
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First off, it's better to overpitch than to underpitch. From what I know of yeast, which is not a ton, the only pitfalls I can think of would be a lack of yeast character in the beer. Many of the yeast flavors and esters are produced right away during reproduction so if you are overpitching their will be less reproduction which would mean less yeast character. This would be mostly a problem if you are using a yeast that contributes a lot to the finished product and less a problem f you are using something super clean and crisp. I think at least, would like to here someone else's opinion or at least validation of my theory.

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Old 08-18-2012, 10:01 PM   #3
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Quote:
Originally Posted by inhousebrew View Post
First off, it's better to overpitch than to underpitch. From what I know of yeast, which is not a ton, the only pitfalls I can think of would be a lack of yeast character in the beer. Many of the yeast flavors and esters are produced right away during reproduction so if you are overpitching their will be less reproduction which would mean less yeast character. This would be mostly a problem if you are using a yeast that contributes a lot to the finished product and less a problem f you are using something super clean and crisp. I think at least, would like to here someone else's opinion or at least validation of my theory.
Great point.
I would just add that overpitching can result in off flavors caused by autolysis.
But as said, if yeast is suppose to be neutral they it is better to overpitch, on other side flavors in some beers cannot be purchased without yeast character (eg. hefeweizen).
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Old 08-18-2012, 10:46 PM   #4
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100% over, or 50% under probably doesn't make much difference.

Over-pitch too much and the yeast will not fully reproduce and you will be making beer with old yeast. You run the risk of having a stalled ferment.

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Old 08-19-2012, 03:17 AM   #5
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Here is a link to an interesting experiment conducted on pitching rates.

http://sciencebrewer.com/2012/03/02/...-deux-results/

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