Cucumber is the bulk of the flavor profile, giving it a refreshing, crisp flavor. Lime balances out the extreme crispness of the cucumber by adding a subtly sour citrus presence. Ginger adds a bright, warming spice. This ties together the freshness of the cucumber and the bite of the lime, providing a soft finish. Hibiscus adds an earthy tartness with a gentle floral top note, keeping it smooth and fresh.