Which beer style is known to have a higher IBU range of 60-120?

The Imperial IPA is known for its higher IBU range of 60-120, which reflects its robust bitterness and hop-forward flavor profile. This beer style typically features a significant amount of hops, both in the brewing process and as dry hops, resulting in pronounced bitterness and aromatic qualities that are characteristic of IPAs, but taken to an even higher level in the Imperial version. The higher alcohol content, coupled with increased hop usage, contributes to a complex balance of flavors, making the bitterness more pronounced.

In contrast, Pale Ales generally have an IBU range of approximately 30-50, which is significantly lower than that of Imperial IPAs. Witbiers, being Belgian-style wheat beers, tend to focus on fruity and spicy flavors with an IBU range usually below 20. Stouts, while they can have various bitterness levels, typically fall within the 30-60 IBU range, often emphasizing roasted malt flavors rather than hop bitterness. Thus, the Imperial IPA stands out clearly with its notably higher IBU, making it the correct choice.