ChaQuiseman
Well-Known Member
I've heard plenty of anecdotes about zinc being the only non-wort-provided-nutrient that yeast needs outside of oxygen and that proprietary yeast nutrient is unnecessary, but actual discussion of this topic never seems to happen all that much.I've gotten much better head retention since I started adding zinc. Also the pH of the mash and sparge will affect foam stability.
For the sake of my curiosity - are you using a yeast nutrient which contains zinc, or dosing your wort with only zinc?
Follow up question - if you're dosing with just zinc, what's your delivery mechanism? Zinc sulfate? Something else?