Is alcohol is a prerequisite for making wine or liquor?

* Alcohol is a product of fermentation, not a prerequisite: Fermentation is the process where yeast consumes sugar and produces alcohol and carbon dioxide as byproducts. So, alcohol is created during the process of making wine or liquor, not added beforehand.

* Fermentation needs sugar: The key ingredient for alcohol production is sugar. Fruit, grains, and other starchy materials provide this sugar.

* Yeast is essential: Yeast is the magic ingredient that triggers fermentation. Without yeast, the sugar wouldn't transform into alcohol.

Therefore, while alcohol isn't added before fermentation, it's the inevitable result of the fermentation process, which relies on sugar and yeast.