Wine and beer are produced directly by fermentation whereas brandy and whisky require both fermentation and distillation. This is because

Step-by-step solution

Beverages like beer, wine are fermented but not distilled. They have relatively low alcohol content typically less than 100 % . Hard liquor like brandy and whisky are produced by both fermentation and distillation. Distillation process purifies them and removes diluting components like water and increases the alcohol content.