kumquats

Kumquats are not uncommon in Louisiana where I grew up. Small, spicy, juicy citrus fruits, they grow prolifically on shrubs. The edible skins are much thinner than that of oranges and grapefruits, but still quite durable. Kumquats make good preserves, candied fruit, and syrups. Some people and other animals eat the kumquat whole off the tree; some dispose of the skins, and spit the seeds out.

The New Oxford American Dictionary states kumquats originated in China.