Coffee Roast by Sunlight
Tije de Jong, a coffee lover based in Amsterdam, wondered if it would be possible or even easy to roast with sunlight and a magnifying glass.
As a boy he was successful at setting stuff on fire with his magnifying glass, so there might be enough solar energy to collect in a metal, reflective bowl catching the full blast of solar heat on a handful of coffee beans.
Shall we see the output of the trial?
Coffee Roast by Sunlight from Frans Goddijn on Vimeo.