Medjool dates. Medjool dates are a popular type of date with a sweet, caramel-like taste. Known as "the fruit of kings," Medjool dates are one of thousands of date varieties grown from the date palm tree. They are high in carbohydrates, making them a good natural source of energy. Dates contain several antioxidants, including flavonoids, carotenoids, and phenolic acids, which may protect cells from damage. Medjool dates are available year-round.