The Imperial Fizz is a refreshing, citrusy cocktail consisting of Whiskey, Lemon Juice, Sugar Syrup, and Soda. So what does the Imperial Fizz taste like? It's tart and sweet, with a hint of whiskey flavor. The soda adds a light and bubbly touch that makes this cocktail even more refreshing. If you're looking for a delicious and easy-to-make summertime drink, look no further than the Imperial Fizz!