Cream colored foam in airlock

[eadavis80]

Brewed NB's 20-Minute Kolsch extract recipe on April 1. Used harvested 1007 (harvested/washed) with a starter. The plastic 6.5 gallon fermenting bucket is in a cool water bath and the thermometer on the bucket read between 58-60 for a few days. Never saw an airlock bubble, but it's probably just a leak with the bucket's lid. Around noon on April 4, the airlock had cream colored foam in it. It wasn't bubbles/Star San - you could not see through it. I took out the airlock and replaced it with the clean/sanitized one. A few hours later, that new airlock was also filled with the same substance. However, my wife and I were leaving for out of town, so I threw on a sanitized blowoff tube just to be safe. I've had to use a blowoff before, but have never seen this cream colored foam in an airlock. Is this just really active 1007 that took a while to get going? I plan on taking a gravity reading on Wednesday just to see if the yeast did/is doing its thing. I know the lack of a bubbling airlock does not mean it's not fermenting as I also brewed an Oktoberfest the same day and after a 24-hour active airlock, it stopped, but that batch is fermenting in a Big Mouth Bubbler so I can see fermentation happening.

 

[EuBrew]

It's just yeast, no worries.

 

[Hello]

^ This. But it is also a good indication that you should be using a blow off tube.

 

[porterpounder]

What they ^^ said. 1007 is an extremely vigorous strain. It blows out of the fermenter every time I use it.

 

[eadavis80]

This is the weirdest airlock activity ever on this brew. It basically did nothing, then it required a blowoff, then it went dormant and then today the airlock started going about 2 bubbles every 10 seconds.