Which ingredient is used in both a Blue Hawaiian and a Zombie cocktail?

The ingredient common to both a Blue Hawaiian and a Zombie cocktail is sour mix. Sour mix is a blend of lemon or lime juice and simple syrup, giving cocktails a balanced tartness. In the Blue Hawaiian, sour mix is included alongside other tropical flavors to create a refreshing drink. Similarly, the Zombie cocktail, known for its fruity and potent profile, also incorporates sour mix to enhance the overall flavor and complexity.

Understanding this ingredient is crucial for bartenders because sour mix is often used in various cocktails to add acidity and sweetness, making it a versatile component in mixology. The distinct combination in both drinks exemplifies how sour mix can complement different flavor profiles, from fruity to more robust blends.