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Infected starter?

Joined
Dec 28, 2011
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St. Louis
I need a little advice. I made a starter last week for my kolsh( I intended to brew last weekend, but I ran into some problems)using my stir plate. I should also say that I plan to make an alt next week using the same yeast. Anyway, so I couldn't brew last week, so this last Wednesday I decanted the old wort from my starter and pitched new wort (.5c DME to 2c distilled water)to activate/step up my wort. I wasn't able to keep it under control and the wort erupted. I tried to to keep it as clean as possible. I wiped the outside with Lysol wipes and the rim with an  alcohol  wipe. I have a fear that this could have gotten infected. Any input would be great.
 
If you wiped it down while there was still a protective layer of krausen, you're fine! As long as there was positive pressure, nothing was falling in.

Next time, use a couple of drops of foam control in the wort, while it is above 180F. You won't see krausen in the starter, but big bubbles, instead (and sometimes what looks like a film or sheen on top; it's benign and not bacterial). But you will see the increase in yeast volume and avoid the blowoff you just had.
 
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