Cardamom has a strong, unique taste, with an intensely aromatic, resinous fragrance. Black cardamom has a distinctly more smokey, though not bitter, aroma, with a coolness some consider similar to mint.

The content of essential oil in the seeds is strongly dependent on storage conditions, but may be as high as 8%. In the oil were found α-terpineol 45%, myrcene 27%, limonene 8%, menthone 6%, β-phellandrene 3%, 1,8-cineol 2%, sabinene 2% and heptane 2%. (Phytochemistry, 26, 207, 1987) Other sources report 1,8-cineol (20 to 50%), α-terpenylacetate (30%), sabinene, limonene (2 to 14%) and borneol.

In the seeds of round cardamom from Jawa (A. kepulaga), the content of essential oil is lower (2 to 4%), and the oil contains mainly 1,8 cineol (up to 70%) plus β-pinene (16%); further­more, α-pinene, α-terpineol and humulene were found.