Laser Coffee

Coffee that is brewed by laser beams. What better combination could there be? Well, fantasy is becoming a reality thanks to Anna Rosa Ziefuss. She is a German scientist who has invented a speedy way to make cold-brew coffee. Total time? Three minutes! Jesus Diaz at FastCompany has the scoop. Ziefuss and her colleagues used a stock, ultrashort pulse laser from the lab, arranging a series of optical lenses to enlarge the beam and point it at a vessel that contained the coffee powder. While regular cold brew sits undisturbed for several hours, in Ziefuss’ method, the solution gets stirred,…