Stage

Since you know how much ethanol was in the boiler, and you know the rate of collection, you can calculate when the end of the run should be. About an hour before this time, you should start collecting in small bottles and checking them for taste and smell before adding them to the main container. Your sense of smell is much more sensitive than the thermometer.

When you detect tails in the product, switch to a tails container. You can raise the collection rate now, and continue until the temperature has risen a few degrees, indicating that all the ethanol has been collected. You can add the collected tails to the boiler of the next batch along with the heads.

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Brew Your Own Beer

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