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Onions, baked

Onions are a vegetable, and the figures here describe them after baking. They mainly provide carbohydrate, including naturally occurring sugars, along with fibre and small amounts of protein. Per 100g, baked onions contain 9.9g of carbohydrate, of which 7.7g is sugars, and 2.7g of fibre. Their fat content is 0.2g per 100g.

Carbohydrate provides energy for the body, while fibre supports normal bowel function. The sugars in onions occur naturally within the vegetable rather than being added sugars. Baked onions contain little salt and only trace amounts of saturated fat, although added salt, butter or oil can change the nutritional content of a prepared dish. Full nutritional figures are in the tables below.

Nutrition per 100g

Nutrient

Per 100g

Energy

43 kcal

Energy

185 kJ

Graisse

0.2g

of which saturates

Trace

Carbohydrate

9.9g

of which sugars

7.7g

Fibre

2.7g

Protéines

1.2g

Sel

0.01g

Eau

86g

Cholestérol

0mg

Vitamins and minerals per 100g

Nutrient

Per 100g

Vitamin A (retinol equivalent)

2µg

Vitamine D

0µg

Vitamine E

0.36mg

Vitamine C

3mg

Thiamin (B1)

0.11mg

Riboflavin (B2)

0.02mg

Niacin (B3)

0.3mg

Vitamine B6

0.1mg

Vitamine B12

0µg

Folate

11µg

Calcium

37mg

Fer

0.37mg

Magnésium

10mg

Phosphorus

29mg

Potassium

172mg

Sodium

4mg

Zinc

0.2mg

Copper

0.05mg

Sélénium

Trace

Iodine

2µg

Other types of onions

Food

Calories per 100g

Protein per 100g

Fat per 100g

Fibre per 100g

Onions, boiled in unsalted water

25 kcal

0.7g

0.3g

2.3g

Onions, dried, raw

309 kcal

8.8g

1.2g

19g

Onions, fried in corn oil

95 kcal

1.2g

5.3g

3g

Onions, fried in lard

95 kcal

1.2g

5.3g

3g

Onions, fried in rapeseed oil

95 kcal

1.2g

5.3g

3g

Onions, fried in sunflower oil

95 kcal

1.2g

5.3g

3g

Onions, pickled, drained

24 kcal

0.9g

0.2g

1.6g

Onions, raw

35 kcal

1g

0.1g

2.2g

Onions, fried in butter

95 kcal

1.2g

5.3g

3g

Onions, pickled, cocktail/silverskin, drained

15 kcal

0.6g

0.1g

–

About these figures

Values are per 100g of the food as described (Calculated from 13-499 using weight loss of 20%, baked for 90 minutes at 180C). "Trace" means only a very small amount was found. Nutrients that were not measured are not shown. Salt is calculated from sodium.

Lectures complémentaires et références

  • Public Health England. McCance and Widdowson's The Composition of Foods Integrated Dataset 2021. GOV.UK.

Historique de l'article

Les informations sur cette page sont rédigées et examinées par des cliniciens qualifiés.
  • 4 Nov 2026 | Dernière version
  • 3 Nov 2026 | Publié à l'origine