Final answer:
The Romans diluted their wine with water, sweetened it with honey, and made spiced wine similar to mulled wine, but they did not distill wine to increase its alcohol content. Distillation to produce spirits became widespread in Europe in the 15th century.
Step-by-step explanation:
The Romans engaged in various practices when it came to drinking wine. They would dilute their wine with water, as drinking undiluted wine was considered barbaric. They also enjoyed sweetening their wine with honey and would sometimes boil it and add spices, creating something akin to modern-day mulled wine.
However, the Romans did not distill their wine to increase alcohol content. Distillation of alcohol to create spirits like gin, vodka, and whisky became common in Europe much later, around the 15th century, long after the fall of the Roman Empire.