Use large, single ice cubes or chunks rather than small cubes—they melt slower and prevent dilution while properly chilling your cocktail to the ideal temperature.

Always stir a Manhattan for 30-45 seconds in a mixing glass with ice; shaking introduces unwanted aeration and clouds the drink's elegant clarity.

Pre-chill your coupe or cocktail glass by filling it with ice water while you prepare the drink, then discard before pouring to maintain optimal temperature longer.

Invest in premium sweet vermouth and store it in the refrigerator after opening—cheap or oxidized vermouth will drastically diminish the cocktail's sophisticated flavor profile.

Use high-quality cocktail cherries (not neon bright ones) and spear them on a pick, adding them last and allowing them to rest at the bottom for a beautiful presentation and subtle flavor infusion.