Julio is making alcohol by fermenting potatoes. He then boils the fermented liquid and routes the vapors into a coiled tube where they condense back into a liquid. What is Julio doing?

Answer: distilling liquor.

Explanation:

Distilling liquor is the way to produce alcoholic beverages like brandy, whiskey, and rum. Distillation can be done from wine, fermented fruit, plant extracts or starchy substances already brewed.

Distillation requires prior fermentation, a process that naturally decomposes organic materials holding carbohydrates. Finally, distillation happens when the fermented liquid is boiled to create vapor condensation with a higher alcohol concentration.