The tomatillo (Physalis ixocarpa or Physalis philadelphica) is a plant of the Solanaceae (nightshade) family, bearing small, spherical and green or green-purple fruit of the same name. Tomatillo plants are highly self-incompatible (two or more plants are needed for proper pollination, thus isolated tomatillo plants rarely set fruits). The tomatillo fruit is surrounded by a paper-like husk formed from the calyx.
