Originally Posted by Anubis
You aren't supposed to use a starter for dry yeast. Only rehydrate.
rehydrating is even optional. I just sprinkle on top and close the lid.
Only use a starter w/ liquid yeast. the liquid smack packs or liquid vials have about 100 billion cell count. Most mid gravity beers require closer to 200 billion.
the dry packs come with 200 billion cell count already, no need to start them.
use this calculator to determine: http://www.mrmalty.com/calc/calc.html