Tomatillo

The tomatillo , also known as the Mexican husk tomato, is a plant of the nightshade family bearing small, spherical, and green or green-purple fruit of the same name. Tomatillos originated in Mexico and were cultivated in the pre-Columbian era. A staple of Mexican cuisine, they are eaten raw and cooked in a variety of dishes, particularly salsa verde. The tomatillo is a perennial plant, but is generally grown for agriculture each year as if it were an annual. The tomatillo (from Nahuatl, tomatl) is also known as husk tomato, Mexican groundcherry, large-flowered tomatillo, or Mexican husk tomato. Some of these names, however, can also refer to other species in the genus Physalis. Other names are Mexican green tomato and miltomate.

Source: Wikipedia