I refrain from brushing my teeth before I have a beer for the same reasons...
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Looks like Euglena to me. They are common protists found in water. They are photosynthetic (why they appear green in most pictures and diagrams) but ethanol will draw the chlorophyll from the choloplasts.
That solves the mystey. Thanks. The things did indeed look like this image from the web:
Not sure yet where exactly it was hiding since I doubt that they can live in beer.
I know you got me thinking of doing this, by the way I'm still waiting for that beer! Is it carbed yet?
Anybody else have any parts of your brewing that just aren't as smooth as you want?Right now I shoot for 7.25 gallons preboil and generally end up with 5.5-5.75 gallons. I know that is a pretty high evaporation rate but it works for me I guess.
Just turn down the heat. You want to shoot for 10-15% boil-off/hr