Carob. Have you heard of this health food? Carob is often promoted as a chocolate substitute, but I'll tell you why that is so wrong.  Carob is the fruit of the carob tree (Ceratonia siliqua), a leguminous plant, and grows as long, slightly curved, thick, dark brown pods that are from 10-25 cm long. This plant is native to the Mediterranean regions. Historically, the...