Harvesting the spaghetti tree.
Carla (not Karla) sent this link to me: Swiss Spaghetti Harvest (2 min. 24 sec.). The BBC current affairs show Panorama broadcast this faux documentary on April 1, 1957. Famous broadcaster Richard Dimbleby (really) narrates. Like Forgotten Silver, it fooled a lot of people, some of whom called the BBC to ask how they might grow spaghetti (which, to be fair, was not common in the UK fifty years ago).