Originally Posted by sathrovarr
when and how do you stop fermentation by racking?
#1 Rack to a fresh vessel.
#2 Crash cool - store the vessel in an environment where it will be very cold but not freezing, 34-36 is good.
#3 After 48 hours or so rack again to a new vessel.
Moving the fermented liquid off of most of the yeast in #1, #2 puts the remaining yeast to sleep and causes them to drop out of suspension, and then #3 racks off of any yeast that dropped during #2. I did a few times with success, but have recently switched to sorbate / sulfite.