Wed May 27, 2009 2:15 pm
I like to make my starters a day or two before, not continuously stirring/aerating (simply because I don't yet have a stirplate), and pitch the entire amount into the beer on brewday. I do this for starters that are 2L or below.
If I am brewing kolsch, I usually do about a 3-3.5L starter, and I typically will decant that large of a starter, especially into a beer like a kolsch.
I think the off flavors associated with adding starter wort is a bit overstated, particularly in all but the lightest flavored beers.