Hi Guys - I poked around on the forums here and also homebrewtalk.com to see if I could find info on this, maybe I'm searching under the wrong search words? Here's the dealio.... we're going to make a Coffee Porter tomorrow. We've have an old-ish Wyeast smack pack of London Ale (Nov. 27th manf. date), I'm on the 2nd step of making a starter, the ending cell count should be 108 billion according to the Brewer's Friend calculator. This recipe (and wort gravity) calls for about 70 billion. One step was not enough, step 2 is too much? Here it comes watch for it ...semi rookie question...do we pitch it all? Can you over pitch? I realize this is not an extreme number 108 vs 70 , but also for future knowledge what would happen if you tossed in 300 billion cells when you only needed 100? Not so sure this would ever happen but you never know!! Trying to learn. Thanks in advance guys for your sage advise.