What I do and with good results, is put my finished wort, mash, outside overnight to settle the yeast some and freeze a mix on top. I scoop it out and place in collander for a bit, to drain. I take those drainings, and what I then rack off the rest, into a new carboy, add sparkoloid or just give it all time to settle, then distill.
One issue I worry about in this. If I distill to 95% the resultant, cut to 40% and place into freezer (back when I used to carbon filter), I found the newly mixed distillate would form a slushy mix. After a few weeks, it wouldn't. When the water and distillate had married. Makes me think you would lose some alchohal in those early freezings as well.
I guess it would depend upon what temp. and how long you let it drain to.
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