What is Egg Phosphate? Unearthing a Vintage Soda Fountain Classic
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5 min read
Invented in the late 19th century, egg phosphate was a popular soda fountain drink, with some pharmacies selling it as a health tonic before it became a mainstream favorite. This classic beverage combines a raw egg, flavored syrup, and acid phosphate with carbonated water to create a unique, frothy, and tangy refreshment.
