Know what’s on your plate
Sweet onion
Calories & nutrition facts
sweet, raw
Nutrition facts
Per 100 g% DV- Calories 32 kcal —
- Protein 0.8 g 2%
- Carbohydrate 6.7 g 2%
- Fat 0.1 g 0%
- Fibre 0.9 g 3%
- Sugars 5 g —
- Sodium 8 mg 0%
- Cholesterol 0 mg 0%
Vitamins & minerals
Per 100 g% DVVitamins
- Vitamin A 0 µg 0%
- Vitamin C 4.8 mg 5%
- Vitamin D 0 µg 0%
- Vitamin E 0.02 mg 0%
- Vitamin K 0.3 µg 0%
- Thiamin (B1) 0.04 mg 3%
- Riboflavin (B2) 0.02 mg 2%
- Niacin (B3) 0.13 mg 1%
- Pantothenic acid (B5) 0.1 mg 2%
- Vitamin B6 0.13 mg 8%
- Folate (B9) 23 µg 6%
- Choline 5.5 mg 1%
Minerals
- Calcium 20 mg 2%
- Iron 0.26 mg 1%
- Magnesium 9 mg 2%
- Phosphorus 27 mg 2%
- Potassium 119 mg 3%
- Zinc 0.13 mg 1%
- Copper 0.06 mg 6%
- Manganese 0.08 mg 3%
- Selenium 0.5 µg 1%
Calories by portion
| Portion | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 100 g | 100 g | 32 | 0.8 g | 6.7 g | 0.1 g |
| 1 × NLEA serving | 148 g | 47 | 1.2 g | 9.8 g | 0.1 g |
| 1 × onion | 331 g | 106 | 2.6 g | 22 g | 0.3 g |
| 2 × NLEA serving | 296 g | 95 | 2.4 g | 20 g | 0.2 g |
| ½ × NLEA serving | 74 g | 24 | 0.6 g | 4.9 g | 0.1 g |
| 3 × NLEA serving | 444 g | 142 | 3.6 g | 30 g | 0.4 g |
| 4 × NLEA serving | 592 g | 189 | 4.7 g | 39 g | 0.5 g |
Similar foods
- Onionraw40 kcal / 100 g
- White onionraw41 kcal / 100 g
- Brown onionflesh, fresh, raw31 kcal / 100 g
- Welsh onionwelsh, raw34 kcal / 100 g
- Yellow onionyellow, sauteed123 kcal / 100 g
- Cebolla26 kcal / 100 g
- Spring onionsbulbs only, raw35 kcal / 100 g
- Red onionraw43 kcal / 100 g
- Small onionsraw42 kcal / 100 g
- Sweet potatoraw86 kcal / 100 g
Questions about Sweet onion
How can you tell whether a sweet onion is fresh?
Choose one that feels firm and heavy for its size, with dry, papery skin and no soft spots, damp patches or sprouting. Sweet onions often contain more water than storage onions, so they may not keep as long.
How should you store sweet onions?
Keep whole sweet onions in a cool, dry, dark place with air circulating around them; don’t seal them in a plastic bag. Once cut, wrap or seal the pieces and refrigerate them, using them within a few days.
Can you eat sweet onion raw?
Yes. Its mild flavour makes it good thinly sliced in salads, sandwiches and burgers; soaking the slices in cold water for about 10 minutes makes them milder still. Pat them dry before adding them to your food.
How do you caramelise sweet onions without burning them?
Slice them evenly and cook in a wide pan with a little oil or butter over low to medium-low heat, stirring often. Allow about 30–40 minutes for them to turn soft and golden; add a splash of water if the pan starts catching.
What dishes are sweet onions good in?
Use them raw in salads and burgers, or cook them for onion tarts, soups, chutneys and onion rings. Their sweetness also works well with roasted vegetables and grilled meat.
Can you use a regular onion instead of a sweet onion?
Yes: use the same amount of yellow or brown onion in cooked dishes, though the result will taste sharper. For a raw dish, soak the sliced onion in cold water for about 10 minutes to soften its bite.
What is the difference between sweet onions and yellow onions?
Sweet onions are usually milder and juicier, while yellow onions have a sharper flavour and tend to hold up better in storage. Yellow onions also have more fibre per 100 g: 2.6 g, compared with 0.9 g in sweet onions.
Source: USDA FoodData Central 170008 · per 100 g · carbohydrate per EU label, fibre excluded
