The name cardamom is used for herbs within two genera of the ginger family Zingiberaceae, namely Elettaria and Amomum. Both varieties take the form of a small seedpod, triangular in cross-section and spindle-shaped, with a thin papery outer shell and small black seeds. Elettaria pods are light green in color, while Amomum pods are larger and dark brown.

Both forms of cardamom are used as flavorings in both food and drink, as cooking spices and as a medicine. Elettaria cardamomum (the usual type of cardamom) is used as a spice, a masticatory, and in medicine; it is also smoked sometimes; it is used as a food plant by the larva of the moth Endoclita hosei.

Cardamom has a strong, unique taste, with an intensely aromatic fragrance. Black cardamom has a distinctly more astringent aroma, though not bitter, with a coolness similar to mint, though with a different aroma. It is a common ingredient in Indian cooking, and is often used in baking in Nordic countries, such as in the Finnish sweet bread pulla or in the Scandinavian bread Julekake. Green cardamom is one of the most expensive spices by weight but little is needed to impart the flavor. Cardamom is best stored in pod form because once the seeds are exposed or ground they quickly lose their flavor. However, high-quality ground cardamom is often more readily (and cheaply) available and is an acceptable substitute. For recipes requiring whole cardamom pods, a generally accepted equivalent is 10 pods equals 1½ teaspoons of ground cardamom.

Black cardamom is sometimes used in garam masala for curries. It is occasionally used as a garnish in basmati rice and other dishes. It is often referred to as fat cardamom due its size ('Moti Elaichi'). Individual seeds are sometimes chewed, in much the same way as chewing-gum. It has also been known to be used for gin making.