First, forgive me if I'm posting something that exists within these threads. I've done searching and found a lot of indirect information but nothing that rounds out what I'm looking for.
We are designing our system and have the opportunity to go with either setup for our mash cooker. Right now our plan is to use direct steam injection but I've received a lot of criticism from other distillers who state that introducing steam that could have possible contamination from boiler treatment (even if it is food grade) is a big mistake. The other side of the argument is that we've (the royal we) been making whiskey in America for 60 years using live steam injection. It's efficient and works, so why change it.
The alternative is to use internal coils running indirect steam in combination with a dimple jacket for cooling water.
*We are using a low pressure Colombia boiler
If you could set this up however you wanted, what would you do and why?
Thanks in advance.