Welcome to the 70's!

A Manhattan is a cocktail made with whiskey, sweet vermouth, and bitters.

3/4 oz sweet vermouth
2 1/2 oz bourbon whiskey
1 dash Angostura® bitters
Maraschino cherries

Directions

Place ice in a cocktail shaker. Add the whiskey, vermouth and bitters. Rub the orange peel around the rim of the cocktail glass. Strain the drink into the glass. Add 1 to 2 Real Maraschino Cherries and enjoy!

https://www.foodnetwork.com/recipes/ted-allen/classic-manhattan-cocktail-recipe-3381462
https://articles.aplus.com/a/10-mad-men-cocktails-with-1970s-theme?no_monetization=true