Chill the Glass: Begin by chilling your chosen glass with ice water or placing it in the freezer.
Measure Ingredients: Using a jigger, pour 1 ounce of gin, 1 ounce of sweet vermouth, and 1 ounce of Campari into a mixing glass.
Stir Gently: Fill the mixing glass with ice and stir the ingredients for about 20-30 seconds. This ensures the flavors meld harmoniously without diluting the cocktail.
Strain and Serve: Discard the ice from your chilled glass and strain the stirred mixture into it.
Garnish: Express the oils from an orange twist over the glass by giving it a gentle twist. Drop the twist into the glass or hang it on the rim as a visually appealing garnish.