Pure dark chocolate; Pure dark chocolate with cranberries, blueberries & almonds. 60% Cacao dark chocolate. Natural source of flavonol antioxidants. The natural antioxidants found in tea and certain fruits like berries and grapes can also be found in Hershey's Extra Dark. This is good news; however, like most indulgent treats, Hershey's Extra Dark should be enjoyed in moderation. A serving of Hershey's Extra Dark Miniatures Assortment is 4 pieces (40 g) and has 220 calories and 13 g of fat.