I'm working on a cocktail for a Passoa competition. So far, I've landed on Passoa, Pisang Ambon, Cachaça, fresh passion fruit puree, and lime. I'm trying to decide which juice to use (white grape, pineapple, mango) and which additional ingredient—cinnamon syrup, amaretto, or something else.

For your cocktail competition featuring Passoa, you've already created a compelling mix with Pisang Ambon, Cachaca, fresh passion fruit puree, and lime. Your choice of juice and additional ingredient can either highlight or balance the existing tropical and bold flavors in your creation. Based on the cocktail suggestions we've uncovered, there's some inspiration to help steer your decision.

Using pineapple juice might complement your combination the best, given its historical success in tropical-themed cocktails. The Passoa Kiss and Passion Dreams both capitalize on tropical fruit juices, although they use orange and tropical blends, and the renowned harmony they create makes for a refreshing profile. Pineapple's natural sweetness and subtle tartness could seamlessly enhance the flavors of cachaca and passion fruit puree, providing a zesty, full-bodied tropical drinking experience.

For the additional ingredient, cinnamon syrup can add an unexpected depth and warmth. It contrasts nicely with the fruity notes, just as a hint of spices might in a seasonal cocktail. However, if you're looking for something more nutty and creamy to contrast the citrusy and tropical elements, amaretto could also be an interesting twist, as it pairs well with tropical flavors and adds a delightful almond undertone that could make the drink stand out in its complexity.