Black cardamomUpdate: 3/8/2015
Its seed pods have a strong camphor-like flavor, with a smoky character derived from the method of drying.
Black cardamom is often erroneously described as an inferior substitute for green cardamom by those unfamiliar with the spice; actually it is just not well suited for the sweet/hot dishes which typically use cardamom outside the plant's native range.
Black cardamom, by contrast, is better for hearty meat stews and similar dishes. Although the flavor differs from the smaller green cardamom, black cardamom is sometimes used by large-scale commercial bakers because of its cheapness.