I have had great luck using the left over yeast from one batch to make the next. I just bottle and then add the new wort to the carboy without cleaning it out.
Question: Has anyone done this multiple times, using the same yeast at the bottom of the carboy over and over? I have only dared recycle one rotation and have been told that it doesn't work a third time.
I have done it in the past, and it worked well. I followed the practice of lower OG beer to high OG beer, as was recommended at that time. Lately, I've been practicing yeast washing and that seems to give better and more predictable results.
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