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|Species||Lactuca sativa var. augustana|
Celtuce (/ˈsɛlt.əs/) (Lactuca sativa var. augustana, angustata, or asparagina), also called stem lettuce, celery lettuce, asparagus lettuce, or Chinese lettuce, is a cultivar of lettuce grown primarily for its thick stem or its leaves. It is used as a vegetable and is especially popular in both mainland China and Taiwan, where the stem is interchangeably called wosun (traditional Chinese: 萵筍; simplified Chinese: 莴笋; pinyin: wōsǔn) or qingsun (青筍; 青笋; qīngsǔn). Prepared separately, the leaves are called youmaicai (油麥菜; 油麦菜; yóumàicài).
The pale green leaves, which are tender, and white stems can be eaten raw (in salads) or cooked. It can be pickled, grilled, roasted, or stir-fried. It is mild but nutty, with a slight smoky aftertaste. It is high in vitamins.
It can be grown from seed and is sown from April through May in the Northern Hemisphere. The seeds can be planted in 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.
|Nutritional value per 100 g (3.5 oz)|
|Energy||75 kJ (18 kcal)|
|Dietary fiber||1.7 g|
|Vitamin A equiv.|
|Pantothenic acid (B5)|
|†Percentages are roughly approximated using US recommendations for adults. |
Source: USDA FoodData Central
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.
- Stanley J. Kays iCultivated Vegetables of the World: A Multilingual Onomasticon, p. 658, at Google Books
- Masatoshi Yamaguchi World Vegetables: Principles, Production and Nutritive Values, p. 208, at Google Books
- Caroline Foley How to Plant Your Allotment, p. 51, at Google Books
- "Celtuce or Stem Lettuce". kingsseeds.com. Archived from the original on 23 July 2018. Retrieved 28 January 2017. CS1 maint: discouraged parameter (link)
- Nosowitz, Dan (29 April 2016). "Meet The Vegetable: Celtuce, a Mutant and Delicious Lettuce ..on". modernfarmer.com. Retrieved 28 January 2017. CS1 maint: discouraged parameter (link)
- "Celtuce ribbon salad". soyricefire.com. 21 April 2013. Retrieved 28 January 2017. CS1 maint: discouraged parameter (link)
- "Celtuce, 'Wo Sun'". seedaholic.com. Archived from the original on 2017-08-14. Retrieved 28 January 2017. CS1 maint: discouraged parameter (link)