The stage in the brewing process where yeast is pitched into the wort and the bulk of the sugars are converted to alcohol, transforming the wort into beer. Contrasts with secondary fermentation, bottle fermentation (bottle conditioning) and aging.

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Temperature control during 1st phase fermentation

I am having some issues keeping the temperature controlled. I live in SE QLD and the daily ambient temperature has been 23 degrees C down to 11C. I've been advised not to let the wort drop below 18C ...