I have read so much about the use of Turbo Yeasts and the off-flavours generated.
Well, I'm almost convinced that there are some off-flavours using the Turbos.
I use a shop-bought reflux type still and always carbon filter the spirit after diluting it to about 38%.
Before using the carbon, I rinse it thoroughly then boil it for 10 minutes. Then dry it using a food dehydrator. Takes about 1/2 hour to dry it. I use one of those stainless steel in-line filters.
After I filtered the last batch (about 9.5 litres @ 38%) I boiled the carbon to try and clean it for future use.
As the carbon was boiling, the stench it gave off smelled like nail polish remover or acetone. A bit like thinners. After about 20 minutes the smell was still there, but not as bad. I used this carbon in the next 'Turbo' wash to try and get rid of some of the impurities during the fermentation. Similar treatment used by Still Spirits by using their 'Turbo Carbon'.
For my next wash I will try the Sugar/Tomato Paste Wash. I will dilute/carbon filter the result as I have the Turbo wash. Then boil the carbon to see what smell it gives.
Yes, I know they claim that you don't have to filter a TPW.
There's only one way to find out.
Cheers