What type of juice is used in a Chilled Sex on the Beach?

In a Chilled Sex on the Beach cocktail, cranberry juice plays an essential role in achieving the right flavor profile. It provides a tart and slightly sweet balance that complements the other ingredients typically included in the drink, such as vodka, peach schnapps, and orange juice. The tartness of cranberry juice adds depth and complexity, enhancing the overall taste experience.

While other juices, like orange or pineapple, could be used in different cocktails, they do not represent the classic combination for this particular drink. Grapefruit juice, while popular in many cocktails, is not a traditional ingredient in a Chilled Sex on the Beach. Thus, cranberry juice is the correct choice, as it delivers the expected taste that defines this cocktail.