Originally Posted by eviljafar
I'm curious as to why this is. I always just sprinkle on and I have a Krausen in 2-3 hours.
When the yeast are first re-absorbing water they can not restrict what passes into the cells. So, a number of the cells die because too much toxic crap has ended up in the cells. Also, if the wort is too sugary then they cannot properly 're-fill' themselves.
Some yeast are OK just being sprinkled though, plus there are a lot of cells in those packs.