They are also green, although they can ripen to yellow. Tomatillos are coated in a sticky residue and covered with a thin, papery husk on the outside. Cooking helps soften the thick skin and brings out more flavor. Tomatillos have a tart, fruity, and slightly herbal flavor.
Recipes:
Tomatillo Cheesy Maniladas (Combo of enchiladas and manicotti techniques)