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Onion marinated in vinegar or spices, commonly used in salads and as a garnish.
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 serving (medium) of Marinated Onion (40 g) has 18 calories. That works out to 45 calories per 100 g. It contains 3.8 g of carbs, 0.4 g of protein, 0.1 g of fat and 0.7 g of fiber. Its glycemic index is 35 (low), so it raises blood sugar slowly.
Selected: 1 serving (medium) · 40 g
18
KCAL / 40G
Carbs
3.8g
· 1% DV
Protein
0.4g
· 1% DV
Fat
0.1g
· 0% DV
Fiber
0.7g
· 3% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 86% · Protein 9% · Fat 5%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 18 kcal | |
| Total fat | 0.1 g | 0% |
| Saturated fat | 0.02 g | 0% |
| Trans fat | 0 g | |
| Sodium | 84 mg | 4% |
| Total carbohydrate | 3.8 g | 1% |
| Fiber | 0.7 g | 3% |
| Protein | 0.4 g | 1% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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| Serving | Amount | Calories |
|---|---|---|
| 1 serving (medium) | 40 g | 18 kcal |
| 1 slice (thin) | 10 g | 5 kcal |
| 1 tablespoon (chopped) | 15 g | 7 kcal |
| 1 serving (small) | 20 g | 9 kcal |
| 1 slice (thick) | 25 g | 11 kcal |
| 1 piece (thin) | 30 g | 14 kcal |
| 1 piece (thick) | 50 g | 23 kcal |
| 1 serving (large) | 60 g | 27 kcal |
| 1 cup (chopped) | 80 g | 36 kcal |
| 100 g | 100 g | 45 kcal |
| 1 pack (medium) | 100 g | 45 kcal |
Calculated from 45 calories per 100 g.
Marinated Onion is made by tossing thinly sliced onion with vinegar, salt and optional spices, then letting it sit until the flavor mellows. Thin slices absorb the marinade faster and are easier to use as a topping.
Marinated Onion works well in salads, tacos, sandwiches, burgers and grain bowls. Its sharp, tangy flavor adds contrast to rich or savory dishes, so a small amount can brighten a meal.
Keep Marinated Onion in a clean, covered container in the refrigerator and use a clean utensil each time. Discard it if you notice mold, an unpleasant smell or an unusual slimy texture.
Marinated Onion can turn pink when red onion pigments react with the acid in vinegar. This color change is normal and does not by itself mean the onion has spoiled.
Apple cider vinegar gives Marinated Onion a relatively mellow, fruity tang, while white or wine vinegar tastes sharper. Choose one you enjoy; the onion should be coated so the slices can take on the flavor.
Yes, Marinated Onion can be made with white, yellow or red onions. Red onion gives a vivid color and a slightly sweeter impression, while white onion usually keeps a sharper, more pungent flavor.
To make Marinated Onion milder, rinse the sliced onion briefly under cold water and drain it well before adding the vinegar. This removes some of the sharp surface compounds without washing away all its onion flavor.
Marinated Onion is best given some time to absorb the vinegar and seasonings before serving. Thin slices soften and take on flavor sooner, while longer marinating makes them tangier and gradually less crisp.
Not always. Marinated Onion is commonly dressed with vinegar and seasonings for use as a fresh condiment, whereas pickled onion is often preserved in brine for longer. Recipes and terminology vary, so the difference is not strict.
Yes, Marinated Onion may trigger heartburn or stomach irritation in some people because onion and vinegar can be troublesome for sensitive stomachs. Reduce the portion or avoid it if you notice symptoms; seek medical advice if they persist.
Vitamins
Vitamin C
2.8mg · 3% DV
B6
0.05mg · 3% DV
Folate
7.6µg · 2% DV
B1
0.02mg · 2% DV
Minerals
Sodium
84mg · 4% DV
Copper
0.02mg · 2% DV
Phosphorus
12mg · 2% DV
Manganese
0.04mg · 2% DV
Potassium ⭐
48mg · 1% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 18 calories in 1 serving (medium) (40 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
Marinated onion is sliced onion left to soften in vinegar, often with spices or herbs. It is a simple, tangy condiment found in many food traditions rather than a dish tied to one specific origin.
Its sharp bite mellows as it marinates, making it a lively topping for salads, sandwiches, tacos, grilled meats and grain bowls. It is low in fat, with most of its carbohydrates and fibre coming from the onion itself. A small amount can add plenty of tang and crunch; for a milder version, use less vinegar or briefly rinse the onion before serving.
Medium
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Medium
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
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.
No known major allergens
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
SATURATED
0.02g
MONOUNSATURATED
0.01g
POLYUNSATURATED
0.01g
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Nutrition data compiled from USDA FoodData Central and scientific sources.