I’m using on mixed apples and it is fermenting strong and throwing huge foam for days! Waiting for it to slow down so I can top up. Never seen so much foam.
I used it on cider too, but it was winter and cold in my brew room. It didn't want to start fermenting at 60F, I had to get it near my heater and add a bunch of DAP. Don't remember it making a lot of foam.