Fill a tall glass with one cup of ice, then pour ½ cup soda water over it.
Pour ½ cup chilled coffee into the cup. If using freshly brewed coffee, cool for at least 10 minutes before pouring. Add 2 tablespoon simple syrup, and ⅛ teaspoon cherry syrup, if using.
Finish it off by pouring in some coffee creamer.
Notes
Feel free to adjust the recommended amounts of simple syrup, cream, etc. to your carbonated coffee based on your personal preferences.
You can very easily transform your iced coffee soda into an adult beverage by adding Kahlua, coffee liqueur, vodka, or whatever spirits you like in your cocktails! Angostura or orange bitters are also a good idea!