Which ingredient is NOT found in a White Cadillac?

The White Cadillac is a cocktail that typically includes white crème de cacao, triple sec, and cream, which are all key components contributing to its rich and creamy texture and flavor profile. The presence of these ingredients creates a balanced taste that is both sweet and smooth, making it a popular choice for dessert-style drinks.

Bourbon, while a common spirit in many cocktails, does not belong in a White Cadillac. The choice of a clear liqueur like crème de cacao and the citrus notes from the triple sec are essential in distinguishing this drink from others that feature bourbon. Therefore, the correct choice indicating which ingredient is not found in a White Cadillac is indeed bourbon.