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 wosun () or woju () (although the latter name may also be used to mean lettuce in general).

The stem is usually harvested at a length of around 15-20 cm and a diameter of around 3-4 cm. It is crisp, moist, and mildly flavored, and typically prepared by slicing and then stir frying with more strongly flavored ingredients.

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• ACCE$$ TO A$IAN VEGETABLE$ (photo and multilingual synonyms)

Stem vegetables | Lechuga china | 莴笋