In the United States, a soda jerk was a person—typically a young man—operating the soda fountain in a restaurant, preparing and serving soda drinks and ice cream sodas. The drinks were made by mixing
Soda jerk passing an ice cream soda between two soda fountains, New York City, New York, 1936
A soda jerk tossing a scoop of ice cream into a metal mixing cup before blending a malted shake, Texas, 1939