instant coffee

In the manufacture of instant coffee (called soluble coffee in the industry), a liquid concentration of coffee prepared with hot water is dehydrated. This can be done by spray-drying (by drying with a hot gas) or by freeze-drying (a dehydration process known as…

After 1950 the production of instant coffee was perfected, which led to increased production of the cheaper Robusta beans in Africa. See also history of coffee.