What is traditionally used as a garnish for a Manhattan cocktail?

The traditional garnish for a Manhattan cocktail is a maraschino cherry. This classic cocktail, which typically consists of whiskey, sweet vermouth, and bitters, is known for its rich, smooth flavor profile. The addition of a maraschino cherry not only enhances its presentation with a pop of color but also complements the sweetness of the vermouth and balances the bitterness from the bitters used in the drink.

While garnishes such as a lemon wheel, an olive, or a twist of orange are commonly associated with other cocktails, they do not align with the traditional presentation of a Manhattan. The maraschino cherry has become a hallmark of this iconic drink, making it the correct choice for a garnish in this context.