A blood orange is a type of citrus fruit that has a dark red or purple-colored flesh due to its high content of anthocyanins, which are natural pigments. The name comes from the fact that the juice and pulp can appear bright red when the fruit is cut open, giving it an appearance similar to blood. Blood oranges are a variety of the common sweet orange (Citrus × sinensis) and are grown in regions such as Italy, Spain, and California. They have a unique flavor that is both sweet and slightly tart, with a hint of raspberry. The fruit can be eaten fresh, used to make juice or marmalade, or even cooked for desserts and cocktails.