What is the main ingredient in a Dry So-Co Manhattan?

In a Dry So-Co Manhattan, the primary ingredient is Southern Comfort, which is a whiskey-flavored liqueur. This unique spirit forms the foundation of the cocktail, providing its distinct flavor profile. The "Dry" in the name typically suggests that the drink is mixed with dry vermouth, but the defining characteristic is the use of Southern Comfort itself.

Southern Comfort adds fruity and sweet notes to the cocktail, which complements the bitter or herbal characteristics of the dry vermouth. The balance between these elements is crucial for achieving the signature taste of a Dry So-Co Manhattan. The other options, such as vodka, gin, and rum, do not play a role in this particular cocktail, as they are not traditional or appropriate for a Manhattan variation that centers around Southern Comfort.