I've been trying to grow some pacman from the slurry in a 22 Ozs brutal bitter. Two attempts appear to have failed. I'm adding the slurry from a few bottles to about 300ml of 1.040 wort made from DME and some yeast nutrient. The temps aren't exceeding 75 degrees at anytime. As far as I can tell it never really gets going despite some nice looking slurry in the bottom of the flask. How much activity should I expect from this little yeast? Any ideas? Try a different Rogue beer for more cells maybe?