Welsh Onion Nutrition Facts

FoodData Central Updated 6 April 2026

Welsh Onion contains 34 calories, 1.9g protein, 6.5g carbs, and 0.4g fat. A perennial bunching onion with hollow green stalks and no true bulb, common in East Asian cooking. Low in calories and high in vitamin K.

34

cal

6.5g

carbs

1.9g

protein

amino acids ↓

0.4g

fat

2.4g

fiber

2.2g

sugar

Vitamins in Welsh Onion

Per 100g

Vitamin C
27mg
30%
Vitamin E
0.51mg
3%
Vitamin K
193mcg
161%
Vitamin B6
0.07mg
4%
Thiamin (B1)
0.05mg
4%
Folate
16mcg
4%

Minerals in Welsh Onion

Per 100g

Calcium
18mg
1%
Iron
1.22mg
7%
Magnesium
23mg
5%
Phosphorus
49mg
4%
Potassium
212mg
5%
Sodium
17mg
<1%
Zinc
0.52mg
5%
Selenium
0.6mcg
1%
Copper
0.07mg
8%
Manganese
0.14mg
6%

Amino Acids in Welsh Onion

Protein breakdown per 1 cup (100g), from the USDA record for this food.

Essential Amino Acids Per 1 cup (100g) Per 100g % of Protein
Histidine 33mg 33mg 1.7%
Isoleucine 81mg 81mg 4.3%
Leucine 113mg 113mg 5.9%
Lysine 95mg 95mg 5%
Methionine 21mg 21mg 1.1%
Phenylalanine 61mg 61mg 3.2%
Threonine 74mg 74mg 3.9%
Tryptophan 21mg 21mg 1.1%
Valine 84mg 84mg 4.4%
Other Amino Acids Per 1 cup (100g) Per 100g % of Protein
Alanine 86mg 86mg 4.5%
Arginine 137mg 137mg 7.2%
Aspartic Acid 176mg 176mg 9.3%
Glutamic Acid 393mg 393mg 20.7%
Glycine 94mg 94mg 4.9%
Proline 126mg 126mg 6.6%
Serine 86mg 86mg 4.5%
Tyrosine 55mg 55mg 2.9%

Protein quality is scored against the FAO/WHO/UNU 2007 adult indispensable amino acid reference pattern. The FDA publishes no Daily Values for individual amino acids, so the share of total protein is shown instead.

Learn More About Welsh Onion

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Verified Nutrition Data

Trusted & Verified Nutritional Information

All nutritional data on Food Index is sourced from official U.S. government databases and verified by nutrition experts at leading federal agencies.

USDA Official Source
FDA Safety Standards
HHS Health Standards
NIH Research Verified

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Nutrient values from certified lab analysis

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Data reviewed by nutrition scientists

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Synced with latest official database releases

Nutritional values are based on standard reference data and may vary slightly based on preparation methods, brands, and natural variation in foods. Always consult with a healthcare professional for personalized dietary advice.