Celtuce

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Celtuce
Celtuce.jpg
Celtuce stems & heads
Species Lactuca sativa var. augustana
Cultivar 'Celtuce'
Origin Mediterranean region

Celtuce (/ˈsɛlt.əs/) (Lactuca sativa var. augustana,[1][2][3] angustata, or asparagina), also called stem lettuce,[4] celery lettuce, asparagus lettuce,[5] or Chinese lettuce, is a cultivar of lettuce grown primarily for its thick stem,[5] or its leaves. It is used as a vegetable, and is especially popular in Taiwan,[2] and China, where it is called wosun,[5] (Chinese: ; pinyin: wōsǔn),[6] or woju (Chinese: ; pinyin: wōjù) (although the latter name may also be used to mean lettuce in general). In the south of China, it is also called (Chinese: ; pinyin: yóu mài cài) or ‘ou sen’.[7]

The pale green leaves,[5] which are tender,[2] and white stems,[4] can be eaten raw (in salads) or cooked. It can be pickled, grilled, roasted, or stir-fried.[5][4] It is mild but nutty, with a slight smoky aftertaste.[5][6] It is high in vitamins.[4]

It is thought to have originated in the Mediterranean region and then brought to China during Tang Dynasty,[6] about A.D. 600-900.[7]

It can be grown from seed, sown from April and May. Into a set bed or a temporary nursery bed and then transplanted to the growing site. They should be spread 30 cm apart each way. The young (edible) leaves are ready about 4–5 weeks after planting and the edible stems are ready when about 30 cm tall, they are usually harvested between July and September.[4]

The plant can suffer from aphid attack.[7]

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 Quantity
%DV
Vitamin A equiv.
22%
175 μg
Thiamine (B1)
5%
0.055 mg
Riboflavin (B2)
6%
0.07 mg
Niacin (B3)
4%
0.55 mg
Pantothenic acid (B5)
4%
0.183 mg
Vitamin B6
4%
0.05 mg
Folate (B9)
12%
46 μg
Vitamin C
23%
19.5 mg
Minerals Quantity
%DV
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)

See also[edit]

References[edit]

  1. ^ Stanley J. Kays Cultivated Vegetables of the World: A Multilingual Onomasticon, p. 658, at Google Books
  2. ^ a b c Masatoshi Yamaguchi World Vegetables: Principles, Production and Nutritive Values, p. 208, at Google Books
  3. ^ Caroline Foley How to Plant Your Allotment, p. 51, at Google Books
  4. ^ a b c d e "Celtuce or Stem Lettuce". kingsseeds.com. Retrieved 28 January 2017. 
  5. ^ a b c d e f Nosowitz, Dan (29 April 2016). "Meet The Vegetable: Celtuce, a Mutant and Delicious Lettuce ..on". modernfarmer.com. Retrieved 28 January 2017. 
  6. ^ a b c "Celtuce ribbon salad". soyricefire.com. 21 April 2013. Retrieved 28 January 2017. 
  7. ^ a b c "Celtuce, 'Wo Sun'". seedaholic.com. Retrieved 28 January 2017.