How is the glass prepared for a Buster's Bloody Mary?

The glass for a Buster's Bloody Mary is prepared by rimming it with kosher salt. This choice is important because kosher salt adds a savory flavor that complements the spices and ingredients typically found in a Bloody Mary, enhancing the overall drinking experience. The texture of kosher salt also provides a pleasing contrast to the smoothness of the drink.

In contrast, other options like rimming with sugar would be inappropriate for this cocktail, as its sweet flavor profile does not align with the savory and spicy nature of a Bloody Mary. Similarly, while celery salt might seem like a fitting choice given its connection to the drink's garnishing elements, it is not the standard preparation for rimming the glass. Paprika, while it may add a nice flavor or visual appeal, is also not traditionally used for this purpose. Hence, the use of kosher salt is the standard and most accepted method for preparing the glass for a Bloody Mary.