What's going on with my yeast starter?????
Yesterday I made a yeast starter for a witbier. I used a stir plate and everything was going just fine. About 8 hours later it had foam all the way up to the foam stopper of a 2L flask. I took it off the stir plate to let it rest. Had to leave again and instead of it settling, it continued to foam to the point that it blew of the stopper and the yeast overflowed all over the counter. Did another starter today and for the first 5 hours it was fine and then started to slowly foam. I took it off the stir plate to let it rest. I'm using white labs 400. I did a white labs Irish ale #004 last week and it was fine. Is there a trick to this yeast? I used one cup of DME to two cups of water for the starter.