Not Your Father’s Root Beer does not contain caffeine. In fact, traditional, non-alcoholic root beer doesn’t typically contain caffeine either, even though it’s classified as a type of carbonated soda. The recipe behind Not Your Father’s Root Beer is not publicly available, but Tim Kovac (the man who created the popular brew), has shared that his hard root beer contains sarsaparilla, birch bark, real vanilla extract, oak, ginger, wintergreen, licorice, honey, citrus, and even mint. This flavor combination will no doubt awaken your taste buds and add some pep to your step, even without caffeine.