What does the term "perfect" mean when ordering a Manhattan?

When ordering a "perfect" Manhattan, the term refers to the use of both dry and sweet vermouths in the preparation of the cocktail. This variation is balanced, as it combines the herbal sweetness of sweet vermouth with the crispness of dry vermouth, creating a unique flavor profile that distinguishes it from the standard Manhattan, which traditionally uses only sweet vermouth. The addition of a lemon twist as a garnish enhances the drink by adding a hint of citrus aroma, balancing the cocktail's complexities. Understanding this terminology allows bartenders to provide the desired experience for guests who may prefer a more nuanced version of a classic Manhattan.