Leigh Tate wrote: Another way to control the amount of alcohol is to stop the fermentation process before all the sugar has been converted. The problem with this is that you have to use a chemical to do it. I've never tried this because to me the chemicals are somehow icky.
A .45 micron filter would remove virtually all active yeast. I have heard of folks using 5 micron with good results as well.
I wonder if cold crashing it first followed by filtering would be the most efficient because the coolness would flocculate a lot of the yeast and drop it onto the lees. This would at least give the filter some relief instead of having to filter ALL the yeast in the brew.