What is locust bean gum?

Locust bean gum is a food additive that comes from the carob tree, typically found in the Mediterranean. It is used as a thickening agent in dairy products, sauces and salad dressings.

To create locust bean gum, the skins on the seeds of the carob tree are removed mechanically or with an acid solution. Then, they are split open and milled. The endosperm portion of the seed, a rough yellow substance, is ground into a fine flour-like consistency. Once combined with carageenan, the mixture becomes a gel that adds body and thickness to many food products. Locust bean gum can be used to replace fat and cholesterol.