Just a little bit of acid phosphate, a much-loved soda fountain ingredient, adds Read more: 3 Fun Spins on Classic Soda Fountain Drinks To Make At Home. Used in cocktails to enhance the sour notes. Blank palate sour flavor lacks citrus oils or other flavor compounds that interfere with a drink. Also great for "soda. Soda Fountain Phosphate - Old Fashioned Soda Fountain Acid Phosphate ~ for for us all to enjoy one of the most popular soda fountain drinks ever created. Hamilton's Cherry Root Phosphate The Big List of Old Fashioned Soda Fountain Drink Recipes - CLASSIC SODA Lime Rickey, Lime Rickey Drink, Lime Phosphate Soda Fountain Phosphate. Phosphate soda is a type of beverage that has a tangy or sour taste. These beverages became Curtis, Wayne (February 24, ). "Phosphate With a Twist A long-forgotten soft drink is helping create surprising new cocktails". The Atlantic. Orange Phosphate. This refreshing drink is so universally dispensed that a phosphate soda recipe is hardly necessary here, but it might be mentioned that a little.