Davidson Plum is a good source of potassium and also contains lutein (a compound that plays an important role in eye health and wellbeing), vitamin E, folate, zinc, magnesium and calcium.. These plums provide unique dairy-free source of calcium as well. The tart and intense fruity flavour lends itself to be used in a range of sweet and savoury dishes, including cakes, jams, sauces, yoghurt and ice-cream. Has a taste reminiscent of stewed rhubarb.