Which of the following ingredients is NOT part of the OPP Monster?

The OPP Monster is a specific coffee beverage that features a combination of flavors. Among the options provided, peach syrup, orange syrup, and pomegranate syrup are indeed elements typically included in this drink. These syrups contribute distinct fruity flavors that enhance the overall taste profile of the beverage.

In contrast, pineapple syrup is not typically listed as an ingredient for the OPP Monster. This exclusion makes it the correct answer to the question, as it is not part of the standard recipe. Understanding the specific flavor combinations and the ingredients used in signature drinks is essential for baristas and coffee enthusiasts, as it helps maintain consistency and accuracy when preparing beverages.