Commonly recognized types of lettuce include:

* Iceberg lettuces form tight, dense heads that resemble cabbage. They are generally the mildest of the lettuces, valued more for their crunchy texture than for flavor. Varieties of iceberg lettuce are the most familiar lettuces in the USA. The name Iceberg comes from the way the lettuce was transported in the US in the 1930s. It was transported on trainwagons all covered in crushed ice - making it look like icebergs.
* Crisphead lettuces form moderately dense heads with a crunchy texture; this type is intermediate between iceberg and looseleaf types.
* Looseleaf
* Romaine, also called cos is a head-forming type with elongated leaves.
* Butterhead, also called Boston or bibb forms loose heads; it has a buttery texture.
* Batavia is similar to butterhead.
* Chinese lettuce types generally have long, sword-shaped, non-head-forming leaves, with a more bitter and robust flavor than Western types, appropriate for use in stir-fried Stir frying is a common Chinese cooking technique used because of its fast cooking speed. Cantonese restaurant patrons judge the chefs by their "wok qi" (their ability to bring out the qi of the wok, which shows in the food as the look, smell, and taste).

A traditionally round-bottom iron pan called a wok is heated to a very high temperature.
..... Click the link for more information. dishes and stews A stew is a common food made of vegetables and meat in some sort of broth or sauce. The line between stew and soup is a fine one, but generally a stew's ingredients are cut in larger pieces, and a stew is more likely to be eaten as a main course than as a starter. There are exceptions though â?? an oyster stew is more like a soup, for example.
..... Click the link for more information. . Chinese lettuce varieties are divided into "stem-use" types (called celtuce Celtuce (Lactuca sativa var. asparagina, augustana, or angustata), also called stem lettuce, celery lettuce, asparagus lettuce, or Chinese lettuce, is a cultivar of lettuce grown primarily for its thick stem, used as a vegetable. It is especially popular in China, where it is the most common form of lettuce, and is called
..... Click the link for more information. in English), and "leaf-use" types such as youmaicai (Chinese: 油麦菜; pinyin: yóumÃ*icÃ*i).