Mine started bubbling a solid day and a half in. It didn't really take off until day 3. I wouldn't worry about it. Two weeks in primary seemed to work well with mine.
Another update:
Cleared my Honey Ale out of the carboy on Saturday in order to make room for the porter. A quick wash and sanitizing later, the porter was moved to its new home for the next few months. The gravity reading showed a respectable 1016, a 50 point drop from the OG. The sample had...
Shamelessly, not shamefully! And I am darn happy I did.
Quick update: The porter is 8 days into primary. Overall, fermentation has been steady. I never saw any extreme activity like I did with my honey ale. It's just been plugging along. Activity in the airlock has slowed almost to a stop...
I shamelessly borrowed this recipe last weekend. I went with the 2 oz Cluster at 60 and added the 1 oz of Fuggles after flameout. The extra .5 oz of Cluster looks like it will net me ~35-36 IBU.
Fermentation took a bit more than 24 hours to get rolling. I have a feeling this will be in...
Dry ice maybe? You should be able to fill the top with enough CO2 to push out most of the air. I wouldn't drop it straight in (-109F). Might have to slowly hold pieces over the top until they 'melt' or crumble it into very small pieces.