. "A soda jerk (or soda jerker) is a person \u2014 typically a youth \u2014 who operates the soda fountain in a drugstore, often for the purpose of preparing and serving flavored soda water or an ice cream soda. This was made by putting flavored syrup into a specially designed tall glass, adding carbonated water and, finally, one or two scoops of ice cream."@en . .