The Tomatillo, also known as the Mexican husk tomato, is on avarage about one or two inches in size. They are covered by a slightly sticky, papery outer skin or husk. As the husk begins to dry, it splits open and fades from green to light brown, revealing the tomatillo fruit inside. Tomatillos are harvested when the fruits are still immature and they have a very tart flavor, unlike their tomato relative. Used either cooked or raw, their tart and slightly acidic taste makes them a great ingredient in salsas, sauces, and jams.