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First, take a reading of specific gravity to determine where you were in the fermentation before the temperature dropped. This will tell you how much further you need to go (meaning how many days to expect further fermentation to go at proper temperatures). Simply bringing the temperature into the correct range will be enough to re-energize the yeast. You ...


40 degrees is quite a bit lower than the bottom range for your yeast. I'd expect that they've gone pretty much inactive. But don't worry! All you need to do to reactivate them is to warm your brew back up to the optimal temperature and provide some gentle agitation. Be careful not to splash! As fermentation has already stated, you don't want to add any ...

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