Celtuce

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Celtuce stems & heads

Celtuce (Lactuca sativa var. asparagina, augustana, or angustata), also called stem lettuce, celery lettuce, asparagus lettuce, or Chinese lettuce, IPA (UK,US) /ˈsɛlt.əs/, is a cultivar of lettuce grown primarily for its thick stem, used as a vegetable. It is especially popular in China, and is called wosun (Chinese: ; pinyin: wōsŭn) or woju (Chinese: ; pinyin: wōjù) (although the latter name may also be used to mean lettuce in general).

Celtuce (foreground) for sale in Lhasa
Celtuce, raw
Nutritional value per 100 g (3.5 oz)
Energy 75 kJ (18 kcal)
3.65 g
Dietary fiber 1.7 g
0.3 g
0.85 g
Vitamins
Vitamin A equiv.
(22%)
175 μg
Thiamine (B1)
(5%)
0.055 mg
Riboflavin (B2)
(6%)
0.07 mg
Niacin (B3)
(4%)
0.55 mg
(4%)
0.183 mg
Vitamin B6
(4%)
0.05 mg
Folate (B9)
(12%)
46 μg
Vitamin C
(23%)
19.5 mg
Trace metals
Calcium
(4%)
39 mg
Iron
(4%)
0.55 mg
Magnesium
(8%)
28 mg
Manganese
(33%)
0.688 mg
Phosphorus
(6%)
39 mg
Potassium
(7%)
330 mg
Sodium
(1%)
11 mg
Zinc
(3%)
0.27 mg

Percentages are roughly approximated using US recommendations for adults.
Source: USDA Nutrient Database

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.

Lechuga china o wosun
Lechuga china o wosun (2)