Pitch rate for an Impreial Stout

[OttoR]

Hi!

I have kinda noob problem to solve. I'm planning to brew about 3 gallons ( 11 litres ) of RIS with target gravity about 1,090 ( 22,5 Plato ), using a Mangrove Jack's M42 ( New World's Strong ale ) strain.

As far as I understand every package ( 10 g ) of MJ Craft Series contains about 5 billion yeast cells per gram, so the whole pack has 50 billion y.c.. But, following a pitch rate calculator : http://www.brewersfriend.com/yeast-pitc ... alculator/ , I should pitch about 51 gram of M42 strain to come out with 3 gals of my future RIS. That means I should use about 5 packs of this strain.

Please help me to find out if I'm wrong, or 5 packs of dryed yeast strain for only a 3 gal. of RIS is a normal value?

P.S. Looking towards for your reply,
Thank you and sorry for my english!

 

[jeffpn]

If it were me, I'd just put two packs in.

 

[OttoR]

If it were me, I'd just put two packs in.

Thank you for your answer, but, I'd like to now how to be sa accurate as possible. Should I believe yeast strain manufacturers, when they say, that they really go with 50B y.c. in a pack or not?

 

[jeffpn]

I looked it up for you. Most dry yeast instructions state to use one pack normally. They state to use two packs for high OG beer or cold fermenting temperature. It's always worked for me. I just racked my 1.078 OG Belgian and it fermented out further than I thought it would. I used one pack of dry yeast.

Look at the manufacturer's instructions, page 3.

http://culturesforhealth.com/media/docs ... _Yeast.pdf

RDWHAHB

 

[OttoR]

I looked it up for you. Most dry yeast instructions state to use one pack normally. They state to use two packs for high OG beer or cold fermenting temperature. It's always worked for me. I just racked my 1.078 OG Belgian and it fermented out further than I thought it would. I used one pack of dry yeast.

Look at the manufacturer's instructions, page 3.

http://culturesforhealth.com/media/docs ... _Yeast.pdf

RDWHAHB

Ok, thank you. I feel a bit more confident now)