First, I have not tried this, this is an idea of mine I am looking for feedback on its feasibility.
I would like to brew 10 gallons of a sour mashed BW and then split into two fermenters. From what I understand (I am a pretty new brewer) gose is a BW with sea salt and coriander added. Thus, could I boil salt and coriander in maybe half to a gallon of water, cool, and then add to one of my fermenters as I filled? I am thinking I would want my BW slightly more sour than the gose anyway so the dilution by adding my salt and coriander "tea" isn't a problem and I am not too concerned with gravity in these beers either.
Does this seem like it could work or should I just split the batch after the sour mash and do two separate boils?