Originally Posted by brussum
Is the 2565 Kolsch yeast usually a slow starter? I pitched mine into a recipe similar to the OP's and have waited about 16 hrs. The airlocks are still resting, but there's a thick foam in the buckets. The yeasties just don't seem to be vigorously creating gases yet. Normal? Seems like you usually see airlock activity within 12 hrs or so. The fermenting chamber is at 65F and OG was 1.048.
If you have krausen in your bucket your yeast is moving along pretty well. I have very little head room in my primary so my blow off bucket was bubbling pretty well for a few days. You probably have a lot more head room than I do. My excess wort bucket with 1.5 gals in it doesn't bubble as much due to a lot of head room. It needs to build up enough CO2 pressure to move the airlock.
This is only 12 hours after pitching my yeast.
This is only 24 hours after pitching my yeast.
This is 48 hours after pitching.