The Elephant Heart Plum is yet another Luther Burbank invention. Burbank had a Midas touch in plant breeding. He began with a dozen plum seeds from Japan – a distant exotic land in 1880. And now almost all plums hail from these Japanese ancestors. Elephant Heart or blood plums are a rich visual and taste sensation. So juicy one should be prepared with a napkin. These plums are in Slow Food’s US Ark of Taste, a catalog of over 200 delicious foods in danger of extinction.