Final answer:
Dry Marsala wine is fortified with a distilled spirit after fermentation but before it is fully aged, a method that enhances its alcohol content and flavor.
Step-by-step explanation:
Dry Marsala is a fortified wine that is made in the region surrounding the Italian city of Marsala in Sicily. The fortification process involves adding a distilled spirit to the wine. Fortification occurs after the initial fermentation process, but before the wine has completed its aging process. By fortifying the wine, the alcohol content is increased, which can help preserve the wine and give it a distinct flavor profile that Marsala is known for. The practice of fortification can vary, but typically involves using grape brandy or another neutral spirit.