Cold brew coffee is not new.
There is evidence that cold brew coffee may have been developed by the Dutch or the Japanese in previous times.

The earliest documented record of cold brew coffee is called “Kyoto”, which originated in Japan during the 1600s. This coffee process was said to be popular in the city of Kyoto. The Japanese would brew cold coffee for many hours, extracting all the flavor from the bean. They created elegant machines to brew the coffee in public spaces, thus allowing a grand visual to whet the onlookers appetite as they watched each bead of water dripped down the glass tower and pass through the
coffee grounds, creating the coffee concentrate. Although this is the first evidence of cold brew coffee, it is unknown whether this drink and methodology existed previously. Some people believe the process may have been introduced to Japan by Dutch traders from Indonesia. It may have been developed for the purpose of transporting large quantities of strong coffee which could be reheated later, or served cold.