Whats your process for making soft set?
I was told that allowing too many air bubbles to become incoorporated into the honey during the stirring period predisposes to frosting.
About 65 % of my total yield is soft set as I have a lot of OSR around my apiary.
To reduce bubbles I stir regularly but slowly with a "cork screw" stirrer at 14C until the soft set is made, then warm to 30C and hold at that for 24hrs before jarring. I fill the jars slowly (not an issue as I only do around 60 jars at time). Also I went back to round jars for my soft set as I found bubbles get trapped in the top corners of the hex jars and are a PITA to remove.