Ground cassia cinnamon is spicy, warm, dark reddish brown and is the variety found in most homespun recipes calling for cinnamon. Its fiery flavor profile and distinctive aroma is the most popular of the cinnamons and will be instantly recognizable in your baked treats.
Though ground cinnamon is a familiar spice to many, it is still easy to be dumbfounded by the varieties and choices available for purchase. Cassia cinnamon from any of the places in which it is grown is not true cinnamon (also called Ceylon cinnamon or Sri Lankan cinnamon), but it is what Americans have primarily used for decades and has thus set our cinnamon taste expectations.