Leguminous evergreen tree ( Ceratonia siliqua ) native to the eastern Mediterranean region and cultivated elsewhere.
It is sometimes known as locust, or St. John's bread, in the belief that the "locusts" on which John the Baptist fed were carob pods. The tree, about 50 ft (15 m) tall, bears compound, glossy leaves with thick leaflets. Its red flowers are followed by flat, leathery pods that contain 5–15 hard brown seeds embedded in a sweet, edible pulp that tastes similar to chocolate.