Author Topic: Pitch rates  (Read 453 times)

Offline James K

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Pitch rates
« on: March 08, 2018, 06:31:45 AM »
I am planning an experiment and am curious about pitching rates. I will brew a 6 gallon batch using 15#s of Munich. My guess is starting gravity should be around 1.064.  I will have 4-5 fermentation vessels and am using a variety of dry yeast packets. T58 BE256 s33 from fermentis and belle saison from Lallemand.

How much of these 11g pouches should I pour into a gallon? Or a two gallon batch? I plan to pitch dry without rehydrating. And overpitching, but I do not want to pitch the full package of dry yeast into a gallon.

Thoughts on this experiment?
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Offline klickitat jim

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Re: Pitch rates
« Reply #1 on: March 08, 2018, 06:52:01 AM »
Looks like about 3g per gallon would do. My calc suggests 2.4g, so 3g would qualify as the overpitching you mentioned
« Last Edit: March 08, 2018, 06:57:56 AM by klickitat jim »

Offline dmtaylor

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Re: Pitch rates
« Reply #2 on: March 08, 2018, 12:18:35 PM »
I would use 1/8 pack per gallon.  That is an overpitch believe it or not.
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Online a10t2

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Re: Pitch rates
« Reply #3 on: March 08, 2018, 04:30:43 PM »
You'd need to define a target (over) pitching rate to be able to say. Assuming 1.2 million/mL-°P and 20 billion cells per gram, it would be ~3.6 grams per gallon.

The wrinkle there (apart from assuming cell density for the dried yeast) is that without a count you won't know viability for the non-rehydrated dry yeast. You could assume 50% loss from pitching dry, but those assumptions really start to compound at some point.
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