realestwhiteboy wrote: ↑Tue May 04, 2021 7:43 amI cooked the mash in my still's boiler. I didn't dump sanitizer in it, but I dipped a sponge in the bucket of StarSan solution & cleaned the insider. Then, I rinsed and did the same with a sponge of vinegar after. Would you recommend using a dedicated pot for the mash, to avoid putting the sanitizer inside the still?
When you brew beer, you ferment a week, or two. Then, you rack to a lagering vessel (if you’re lagering the beer) or bottle/keg it (for an ale). The beer could be exposed to bacteria or other contaminants in the process and time can cause your beverage to sour or spoil.
When you’re making a spirit, you’ll be fermenting a short duration (a week more or less) and then racking to the boiler. When boiled, you’re not only sanitizing the equipment, but you’re sterilizing the product. Biological contaminants are eliminated in the process.
So, as hobby distillers, we don’t focus as much on sanitary processes as beer and wine brewers do. Our process ensures removal of harmful flora overtaking the product.....unless it is re-introduced on purpose (have a look at some of the members dunder pit discussions).
However, this does not mean that toxic chemicals are necessarily eliminated in the distillation process. Certainly, unhealthy ferments can produce toxic chemicals, some of which could be processed along with the ethanol during the distillation. Hence, the need for appropriate cuts, or separation of the fractions of the product.
As you’ll learn, from others and from experience, sanitization is not as important for distillers as it is for home brewers. But, keeping things clean is still advisable, as I recommend rinsing your still with water before running and also rinsing with a good water flush after a run.
And it is wise to keep your fermenters clean (even sanitized) between ferments since grains can carry bacteria and wild flora along and contaminate a ferment, possibly consuming the fermentable sugars or even the produced alcohols (think “vinegar” here).
You’ll discover that most hobby distillers do not boil their mashes like home brewers do. And many (not all) distillers even ferment “on the grain” such that grain-borne flora is carried over to the fermenter.
Lacto-bacteria is the most common and when contaminating a ferment can “sour the beer” through production of lactic acid. But the bacteria is retarded in an acidic environment so as the pH falls from production of the lactic acid, the bacteria is actually put “in check”....not killed, just deactivated. If you ferment in plastic, the bacteria will infiltrate the plastic fibers and potentially contaminate subsequent ferments. Sanitization is important to eliminate this “future potential”.
So, good brewing processes are not inappropriate. But sanitizing the boiler and your still are not necessary.
ss