Extinct Acid Phosphate Solution

Proprietary acid phosphate produced by the Extinct Chemical Company for the revival of phosphate drinks. Acid Phosphate is a mineral acid widely used in soda drinks before citric acid became so prevalent. Acid phosphate has a clean, dry sour flavor and little aroma. For more information, please see “Fix the Pumps” by Dary O’Neil (2009). Acid phosphate is the liquid suspension of calcium phosphate and other chemicals. Highly regarded in its day for its healthful attributes and more closely associated with the pharmacy soda fountain than the bar. Employed to impart dryness (as in a dry wine) to cocktails. Also used as an occasional substitute for lemon or lime juice when fresh fruit was not available. Cocktail example: the Montauk Riding Club Cocktail.