Well, some variables here but that could be right.
2x 20 liters = 45 liters?
If your 40 liters of wash was 8% a/v then you would get about 3.2 liters of pure alcohol if you stripped it all out. That's about 8 liters of 40%. But if you ran it that far into the tails then you should have finished with more distilled water in your collected low wines- bringing your volume up and your a/v down to about 20 to 30%. This is very typical of my stripping runs. I strip fast and keep everything except for a few ounces of the foreshots. I strip down until I'm collecting about 10% a/v or so. Maybe you were stripping a bit slow and getting a dab of reflux with your pot still.
I'm thinking that your wash was closer to 10% or richer and you didn't go so deep into the tails. Maybe you stopped collecting at about 20% or so?
Typically, the higher the a/v of the wash (or whatever is in the pot) the higher the proof you'll get out of a pot still..
pot still is a bit different and everyone runs it a bit differently too. My thinking is that you could have stripped a bit more into the tails but that is always a personal choice. There is not much reward going as far as that (down to 10%) because the time and fuel outweighs the little extra alcohol collected.
--- In new_distillers@ yahoogroups. com, "bbbob194713" <bbbob@...> wrote:
> Well i have just stripped a molasses and cornflake wash and i don't think i have enough low wines ,I started with about 45lt of wash 2x 20lt ferments,run it through a stripping run and ended up with 8 Lts @40%
> to run for distilling, In the back of my mind i l ways thought that a result of 30% return was average, (any advice on this)
> Thanks BBBOB,,,