Chill the Glass: Begin by chilling a martini glass.
Mix Ingredients: In a mixing glass, combine whiskey, sweet vermouth, and Angostura bitters.
Add Ice: Fill the mixing glass with large, dense ice cubes.
Stir Gently: Stir the mixture smoothly for about 15-30 seconds, ensuring proper chilling and dilution without overdoing it.
Strain: Strain the cocktail into the chilled martini glass, leaving the ice behind.
Garnish: Decorate the drink with one or more cocktail cherries, delicately placed in the glass, on its rim, or skewered.