So I have a novice question
Would an open fermentation with this strain help with more ester production?
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That's definitely not a novice question
I have used open fermentation on estery ale strains in the past with good results, but I will admit that I have never done a side-by-side tasting to confirm whether there is an actual increase in esters with open fermentation. I haven't tried this with 1469 specifically, either. I'd say that it's certainly worth a try.
On the other side, I ferment in a sealed keg under 2-3 PSI and I still get a fair amount of ester expression. By no means is it a fruit-bomb, but you can definitely pick it out as 1469 if you are familiar with it. I am curious whether open fermentation would boost the ester character.