How much yeast for a stout?

[dttk0009]

I have an Imperial Stout recipe planned with an OG of 1.093. I want to use my packet of S-04 with it, and after checking with Mr. Malty's pitching calculator it told me I'd need 1.3 packets.

I'm thinking that one will probably do the trick but I don't want to risk ending up with an extremely high FG. Would one packet give me enough attenuation?

 

[Pappers_]

When I plugged it into the calculator, I got at least 1.5 packets, if the yeast was very fresh. More if the yeast was older. For a big beer like that, I would err on the side of pitching more, not less, and go with 2 packets.

 

[asterix404]

Pitch 2 packets and watch the airlock bubble with glee. I don't like Mr. Malty, When I use dry yeast I always pitch 2 packets because it's so cheap. The really important thing is to airorate really well. Pass the wort through a sieve and then pitch, it will take off in about 12h.

 

[C2H6O]

I made an Imperial chocolate stout and only pitched 1 packet and fermentation stalled out. I had to add a second after 3 weeks when I took my initial readings. Save yourself the trouble about having to do it later and pitch 2 upfront....

 

[dttk0009]

Thanks, I'll order another packet for this one then. Alternatively, I DO have a spare nottingham packet. Would it be viable to throw that in there as well? I heard it can finish quite dry. Thoughts?

 

[juslod]

I have used Notty in a stout before and it tasted quite fine. But I do prefer S04 for a stout. I would recommend just getting a second pack and using the Notty for something else

 

[dttk0009]

Order placed. Thanks for the help guys.

 

[dttk0009]

Just to update, this actually ended up fermenting so violently and quickly that it blew through my airlock within 12 hours. Totally insane! The waft of phenols I got from opening my chest freezer (temp regulator) was incredible.

It seems to have settled at 1.022 now, though I must have messed up the steeping as it isn't very black at all, rather, a dark brown. Guess I'll find out how it tastes soon. Seems 2 packets was spot on.
Cheers