Racking means moving the beer. In this case, fermentation is over and I want to get the stout off the yeast sludge (trub) at the bottom of the carboy. Yeast starts to feed on itself (autolysis) after it is done feeding on the wort, so it helps the flavor to get the new beer into a fresh vessel. I happen to have a lovely Better Bottle carboy (with valve) for this very purpose. Today I moved the stout from the primary fermenter. It will be ready for the keg this weekend.
a.d. XV Kal. Mar.