These are the instructions for how to make a single drink in a 12-ounce glass.
Pour 4-5 tablespoons of lemon simple syrup into the glass. Add the ice to the glass. If using large ice cubes, use 4 or 5. Add a lemon slice.
Slowly pour the sparkling water over the ice. Add the mint sprig and enjoy the soda.
Notes
Lemon Simple Syrup Recipe: The recipe for the lemon simple syrup makes enough for 4-5 drinks.Sparkling Water or Seltzer: Sparkling water and seltzer are both carbonated but sparkling water is naturally carbonated and seltzer is carbonated with carbon dioxide. Sparkling water contains calcium, sodium, and magnesium and the taste can vary from brand to brand based on the minerals in the water.