Easydrinker wrote:a completely bonkers method of distilling, using all sorts of cuts in all sorts of ways, from various stilling methods.
If it is working for you..
Robert.
Mastering any skill becomes easier with experience. Explaining it, in detail, is complicated.
The debate on carbon filtering circles around the key issue of feints. Clean hearts well made should not need carbon filtered. But pure ethanol hearts do not have much flavour: they reside in the feints. For barley it's in the strong tails. Molasses and fruit, in heads and weak tails. Vodka hearts only.
I have a simple stovetop still with improvements to make it more effective. It is simple, it strips effectively, it can topped up on the fly. That lets me add feints during the strip. Which is exactly what scotch distilleries do. Do I carbon filter now? Yes I do, a brief kiss with carbon.
I then do my final spirit run, hearts only, on a reflux column. Clean pure hearts? No. They start light, aromatic, then vanilla, becoming complex, spicy, strong tails pushing over. That's on a reflux column. Do I carbon filter now? Yes if there are sour or fusel notes I don't like the taste of. To run a third time would strip out the good but subtle flavours that had escaped into those hearts from the strong tails or heads.
Whiskey distilleries use at least 3 stills. Strip + 2 spirit runs. Nothing is discarded, all feints and slops or backset is recycled. I am learning why and how to do the same thing.
Rum runners do that too only more so. Even a straight sugar wash is vastly improved by adding backset from corn or barley stripping runs. To the mash, and, to the lowceines from your first run.
Reflux is designed to compress and exclude feints. Potstills cannot, no matter how well designed and skilfully operated. Nor would you want to for rum or whiskey, feints as the flavours. It's also the hangover. Trick is how to get clean hearts yet push flavours into the hearts (or extract then blend in the chosen ones).Feints have good and bad layers. We can exclude the bad with good mashing and clever stilling, and, by cleaning up afterwards.
And cleaning up spirits can take years in barrels. Which is why carbon filtering can work to take years off the wait.
Vodka and gin if well made and triple stilled should not need cleaning by carbon. Mostly because at each run only the hearts are taken. So far, vodka has needed a third run to get it clean enough for me. I will have a go next time running my strip hearts AND my spirit hearts through carbon, compare the taste to triple stilled.