Brewed a porter this weekend, used danstar nottingham yeast. I made a 1.2L starter on my nifty new stir plate. Which as side note may be the end of gadgets for a while, judging by my wife’s reaction. Well I estimate I had more than 300 mil yeast cells. Over night, well the krausen went ballistic, it blew the stopper, and I use the over lip caps, hard to blow those. Krausen filled the fridge, and is still blowing off. I switched to a 1 gallon container, its still blowing. The loss is about 1/2 gallon I guess.