For a delicious mocktail, follow my recipe for Hibiscus Sparkling Soda Spritzers. To make an impressive mid-afternoon thirst-quencher, pour 2 tablespoons of hibiscus syrup in an ice-filled glass and top with cold sparkling water. Think Italian sodas. >>> The vivid red refreshment sold at taquerias and Mexican street corner stands is agua de jamaica. To make your own agua de jamaica, or agua fresca, dilute hibiscus syrup with water. Start with a ratio of 1 cup water to 1/3 cup hibiscus syrup, adding more syrup to your taste.