TheMattTrain
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- Dec 26, 2013
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This is sort of a "is this infected" thread, but I don't have pictures, the beer's already kegged. Here's the story.
About 6 weeks ago I brewed an Irish Red Ale using Denny's Favorite 50 Yeast. I don't have temp control (I know, I know!) so the yeast fermented on the low end. We're talking 58 at the low and probably 62-64 at the high. I needed the carboy it had been fermenting in for three weeks, so I transferred to the keg and took a sample at the same time. It measured 1.030 and tasted pretty good, but was supposed to measure 1.015. The beer in the carboy had a really thin layer of film at the top which I've heard people call residual starsan and many other things. I racked from under it regardless leaving a good quart or two in the carboy. I vented the keg with CO2 to fill the head space and let it sit. I occasionally checked the pressure by relieving the keg via pressure relief valve and had gas coming out. It's now been in the keg for 3 weeks. I checked the gravity today and it was 1.020. Good enough for me. I tasted it and it tasted slightly sour.
I don't often drink samples with a lot of yeast trub floating in the beer, so I don't really know what that taste is. I have also never used Denny's Favorite. The LHBS was out of 1056. Is it possible that this sourness I'm getting is yeast trub rather than infected beer? The mouthfeel was about what I expected it to be. The only time I've had an infection before it made the beer very very light and dropped the gravity lower than I expected it to be.
Thanks for your help!
About 6 weeks ago I brewed an Irish Red Ale using Denny's Favorite 50 Yeast. I don't have temp control (I know, I know!) so the yeast fermented on the low end. We're talking 58 at the low and probably 62-64 at the high. I needed the carboy it had been fermenting in for three weeks, so I transferred to the keg and took a sample at the same time. It measured 1.030 and tasted pretty good, but was supposed to measure 1.015. The beer in the carboy had a really thin layer of film at the top which I've heard people call residual starsan and many other things. I racked from under it regardless leaving a good quart or two in the carboy. I vented the keg with CO2 to fill the head space and let it sit. I occasionally checked the pressure by relieving the keg via pressure relief valve and had gas coming out. It's now been in the keg for 3 weeks. I checked the gravity today and it was 1.020. Good enough for me. I tasted it and it tasted slightly sour.
I don't often drink samples with a lot of yeast trub floating in the beer, so I don't really know what that taste is. I have also never used Denny's Favorite. The LHBS was out of 1056. Is it possible that this sourness I'm getting is yeast trub rather than infected beer? The mouthfeel was about what I expected it to be. The only time I've had an infection before it made the beer very very light and dropped the gravity lower than I expected it to be.
Thanks for your help!