As soon as is it humanly possible after the fermentation process is over, bottling begins. There is no harm in leaving the fermented beer inside of your carboy/fermentation vessel for a little while considering that the alcohol generated by the frenzied activity by the yeast post-fermentation now acts as a natural preservative, but the longer one waits to bottle the longer one is going to have to wait in order to sample the finished product. 815 more words