What is a common garnish for the South Pacific Smokeshow?

A common garnish for the South Pacific Smokeshow being a black salt rim adds a unique flavor profile that complements the cocktail’s ingredients. The black salt not only enhances the drink's visual appeal with its striking contrast against the glass but also provides a savory element that balances the sweetness and acidity typically found in tropical cocktails. This combination creates a well-rounded sensory experience, making it a popular choice for mixologists aiming to elevate their cocktail presentations.

While the other options could serve as garnishes in different contexts, they do not align with the distinctive characteristics and presentation associated with the South Pacific Smokeshow. Fresh basil might be used in other drinks, particularly those with herbal elements, while dehydrated lemon and chili powder, though interesting, do not typically define the flavor or aesthetic of this specific cocktail.