I am a first time home-brewer. Followed the instructions to the letter. When I added the cold water I "splashed" it in to aerate it. The wort had a large head at the time of pitching the yeast. Will this delay or ruin the effect of the yeast?
Pierre
There is certainly an element of personal opinion when it comes to answering this question.
Many people pitch directly on the foam and then either leave it for 15 minutes to start rehydrating before stirring it in or not bother stirring it in at all. Others tend to stir it straight in.
Either way, it is not going to stop the yeast working and the foam normally dies down fairly quickly anyway, at which time the yeast will be in direct contact with the wort.
Read this whole chapter about fermentation. Then read that whole book :p
Most likely you'll be fine. You want there to be lots of oxygen when you pitch, but in the future keep things moving around for a while after pitching so the yeast gets properly mixed in.
Remember, though, that people made beer for a really long time without even knowing what yeast was and things worked out okay. RDWAHAHB!
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