Final answer:
The De La Louisiane cocktail primarily features Bourbon as its key spirit, accompanied by other ingredients like sweet vermouth and Benedictine for a rich and aromatic flavor.
Step-by-step explanation:
The key component in the De La Louisiane cocktail is Bourbon. This classic cocktail, which originated in New Orleans, is a balance of whiskey, sweet vermouth, and Benedictine, with a dash of Peychaud's Bitters and absinthe. It is stirred with ice, strained into a chilled glass, and often garnished with a cherry. The combination of ingredients creates a rich, aromatic drink that is a cousin to both the Manhattan and the Sazerac.