The Blood Orange Is A Variety Of Orange With Crimson, Almost-Blood-Colored Flesh The Fruit Is Roughly The Same Size As An Average Orange, But Sometimes Can Be Smaller Or Larger Its Skin Is Usually Pitted, But Can Be Smooth The Distinctive Dark Flesh Color Is Due To The Presence Of Anthocyanin, A Family Of Antioxidant Pigments Common To Many Flowers And Fruit, But Uncommon In Citrus Fruits Blood Oranges Have A Unique Flavor Profile Compared To Other Oranges, Being Distinctly Raspberry-Like In Addition To The Usual Citrus Notes The Arancia Rossa Di Sicilia (Red Orange Of Sicily) Has Protected Geographical Status