what is the difference between brandy and whiskey
1 Brandy is a spirit produced by distilling wine [35â60% alcohol by volume].  Whiskey has three basic ingredients, mash,barley, yeast and water, and is made through the process of malting, mashing, distilling, fermentation, and finally, maturation. [max. 80% alcohol by volume]
Both Cognac and Whiskey is aged in casks. The age of brandies can be below three to six years, and Cognac at least 2 1/2 years. Most of the brandies are below six years, but can also be a hundred years old. While cognac and brandy uses age terms such as VOP, VS, VSOP or XO, Whiskey shows the exact age of its content: for example 3, 5, 10, 12 or 15 years.