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!