Carob (Ceratonia siliqua): Mediterranean evergreen and food crop

Botany and cultivation

Carob trees typically have a compact, spreading crown with glossy, pinnate leaves and produce long, flattened pods. The pods mature to a dark brown color and enclose numerous hard, shiny seeds. As an evergreen adapted to dry summers and mild winters, carob tolerates drought and poor soils, making it a common choice for windbreaks, erosion control and ornamental planting in suitable regions.

History and cultural significance

Carob has a long association with Mediterranean and Near Eastern agriculture and cuisine. Historically its seeds were used as a weight standard for gemstones and helped give rise to the term "carat." Folklore links the tree with local traditions and, in some cultures, with religious stories; the sweet pods have been used as animal feed and for human nourishment since antiquity.

Uses and products

The ripe, dried pods are processed into a variety of foodstuffs. Typical uses include:

• Ground carob powder used as a caffeine-free alternative to cocoa.
• Sweetened carob bars and confectionery sold as chocolate substitutes; many consumers choose these for allergy or dietary reasons.
• Industrial extraction of locust bean gum from seeds, a thickening agent and stabilizer in foods and cosmetics; this product is often called locust bean gum.
• Syrups, molasses and natural sweeteners made from roasted or boiled pods, and use as livestock feed.

Distinctions and notable facts

Carob differs from cocoa in flavor, composition and processing: it is naturally sweeter, contains no caffeine, and has a lower fat content, so it behaves differently in recipes. While carob is promoted as a healthier or allergen-friendly substitute for chocolate, it cannot always replace cocoa cup-for-cup because of its milder, tangy-sweet taste and different chemistry. For further technical or horticultural details see resources such as botanical guides and food ingredient databases.