Tomatillos
Tomatillos [tohm-ah-TEE-ohs] are small fruits (used as a vegetable)
enclosed in a husk. The fruit resembles a small unripe tomato and is
usually green or yellow. The yellow color indicates ripeness, but
tomatillos are most often used when they are still green. Green
tomatillos are firmer and easier to slice. The husk that holds the
fruit is paper-like and is light brown. 
The
flesh is slightly acidic with hints of lemon, apple and herbs. Even
though tomatillos are sometimes called "green tomatoes", they should
not be confused with green, unripe tomatoes. Tomatillos belong to the
same family as tomatoes.
The Aztecs first grew tomatillos as far back as 800 B.C. and they have been popular in Mexico and other Latin American countries for many years. In the US, they are mainly grown in Texas.
Selection
The condition of the husk is often a
good indicator when selecting tomatillos. If the husk is dry or
shriveled then the fruit is probably not in good condition. Select
tomatillos that have an intact, tight-fitting, light brown husk. If you
peel back a small part of the husk, the fruit should be firm and free
of blemishes.
Canned tomatillos are available at specialty markets and are often used when making sauces. Tomatillos are available year round in supermarkets and specialty markets. Domestically grown tomatillos are available from May through November.
Storage
Fresh tomatillos with the husk still
intact may be stored in the refrigerator for up to two weeks. They are
best stored in a paper bag. Tomatillos last a week longer in the
refrigerator if the husks are removed and the fruit is placed in sealed
plastic bags. Tomatillos may also be frozen after removing the husks.
Preparation
The husks must be removed before
preparing, but tomatillos in the husk are often used as decoration.
Wash the fruit with soap and water to remove the film left by the husk.
Tomatillos may be used raw in salsas or salads or cooked for sauces.
Cooking enhances the flavor and softens its skin, but the result is a
soupy consistency since the fruit collapses after a few minutes.
