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Onion (lightly cooked) Calories
Source of vitamin C and fiber, low calorie, contains antioxidants
CALORIES
GI
POTASSIUM
FIBER
Onion (lightly cooked) Nutrition Facts
Selected: 100 g
38
KCAL / 100G
Carbs
8.2g
· 86%
Protein
1.1g
· 12%
Fat
0.1g
· 2%
Fiber
1.7g
Onion (lightly cooked) Vitamins & Minerals
Vitamins
Vitamin C
7.2mg · 8% DV
B6
0.12mg · 7% DV
Folate
19µg · 5% DV
B1
0.04mg · 3% DV
Minerals
Phosphorus
29mg · 4% DV
Potassium ⭐
146mg · 4% DV
Calcium
23mg · 2% DV
Magnesium
10mg · 2% DV
Onion (lightly cooked) Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
Is Onion (lightly cooked) Processed?
NOVA 2
Minimally Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
Does Onion (lightly cooked) Contain Allergens?
No known major allergens
Which Diets Is Onion (lightly cooked) Good For?
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
Onion (lightly cooked) Fat Profile
SATURATED
0.02g
MONOUNSATURATED
0.01g
POLYUNSATURATED
0.02g
Omega 6:3 ratio 1:1
Below the ideal 4:1 — a good omega balance.
Foods Similar to Onion (lightly cooked)
Onion (lightly cooked) — Frequently Asked Questions
Is lightly cooked onion easier to digest than raw onion?
Usually yes. Light cooking softens onion’s texture and can make it gentler on the stomach for people who get gas, bloating, or irritation from raw onion.
Why does onion taste sweeter when lightly cooked?
Heat makes onion’s natural sugars more noticeable and mellows its sharp bite. With longer cooking, that sweetness becomes deeper and more pronounced.
How long does lightly cooked onion keep in the fridge?
Once cooled and stored in a sealed container, it is best used within 3–4 days. Discard it if it develops an off smell, slimy texture, or unusual discoloration.
Can lightly cooked onion be frozen?
Yes. The texture becomes softer after thawing, so it works best in soups, sauces, sautés, and mixed dishes rather than as a standalone side.
What is the best way to soften onion without burning it?
Cook it over medium-low to low heat with a little oil and a pinch of salt. Stir occasionally and avoid overcrowding the pan so the onion can release moisture and soften evenly.
What foods pair well with lightly cooked onion?
It goes well with eggs, meat, chicken, legumes, and most vegetables. It is especially useful as a flavor base in soups, stews, omelets, stir-fries, and sauces.
Is lightly cooked onion a good choice before a workout?
It can be, in a small portion, if you tolerate it well. But because onion can cause digestive discomfort in some people, it is not always ideal right before exercise.
Can eating lightly cooked onion at night cause discomfort?
For many people it is fine, but those prone to reflux or a sensitive stomach may notice symptoms if they eat a large amount late in the evening. A smaller portion is often better tolerated.
Does onion lose all its benefits once it is cooked?
No. Cooking can reduce some heat-sensitive compounds, but onion still contributes fiber, bulk, and useful plant compounds to a meal.
Who should be careful with lightly cooked onion?
People with IBS, reflux, or a known sensitivity to onion may need to limit it. Tolerance varies, so starting with a small amount is often the safest approach.
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Nutrition data compiled from USDA FoodData Central and scientific sources.