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Low-calorie tangy, salty condiment
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
2 tablespoon (diced) of Pickled red onion (30 g) has 11 calories. That works out to 36 calories per 100 g. It contains 2.6 g of carbs, 0.3 g of protein, 0 g of fat and 0.4 g of fiber. Its glycemic index is 30 (low), so it raises blood sugar slowly.
Selected: 2 tablespoon (diced) · 30 g
11
KCAL / 30G
Carbs
2.6g
· 1% DV
Protein
0.3g
· 1% DV
Fat
0g
· 0% DV
Fiber
0.4g
· 1% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 90% · Protein 10% · Fat 0%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 11 kcal | |
| Total fat | 0 g | 0% |
| Saturated fat | 0.01 g | 0% |
| Trans fat | 0 g | |
| Sodium | 105 mg | 5% |
| Total carbohydrate | 2.6 g | 1% |
| Fiber | 0.4 g | 1% |
| Protein | 0.3 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 |
|---|---|---|
| 2 tablespoon (diced) | 30 g | 11 kcal |
| 1 tablespoon (diced) | 15 g | 5 kcal |
| 1 piece (thin) | 25 g | 9 kcal |
| 0.25 cup (chopped) | 40 g | 14 kcal |
| 1 serving (medium) | 50 g | 18 kcal |
| ½ cup (chopped) | 80 g | 29 kcal |
| 100 g | 100 g | 36 kcal |
| 1 cup (chopped) | 160 g | 58 kcal |
Calculated from 36 calories per 100 g.
Make pickled red onion by covering thinly sliced red onion with a mixture of vinegar, water, and salt. Leave it in a clean jar in the refrigerator for a few hours before serving; the flavor becomes more pronounced as it sits.
Homemade pickled red onion usually keeps for about two weeks in a sealed, clean container in the refrigerator. Keep the onion submerged in the brine and use a clean utensil when serving it.
Pickled red onion turns bright pink because natural pigments in the red onion react with the acidic brine and spread through it. The color change is normal and, by itself, is not a sign that the onions have spoiled.
Pickled red onion pairs well with tacos, burgers, sandwiches, grain bowls, and grilled meat or vegetables. Its sharp, tangy flavor cuts through rich foods, while the crisp slices add contrast to softer fillings.
Yes, you can make pickled red onion with another acidic ingredient, such as lemon juice. A salt-water-only version uses a different brining or fermentation method and will not develop the same quick, vinegary taste.
Most quick pickled red onion is not fermented; it is preserved in vinegar or another acid and can be eaten after a short soak. Fermented red onion is made with salt brine and develops its acidity through fermentation over time.
Keep pickled red onion crunchy by slicing it evenly, using fresh, firm onions, and refrigerating it rather than heating the brine and onion together. A longer soak softens the slices, so use them once they reach the texture you like.
Yes, leftover pickled red onion brine can add tang and salt to salad dressings, marinades, or sauces. Taste it first, since its acidity and saltiness vary, and do not reuse it to preserve a fresh batch of onions.
Yes, pickled red onion can spoil, especially if it is stored warm or handled with unclean utensils. Discard it if you see mold, notice an unpleasant or unusual smell, or find that its texture has become unexpectedly slimy.
Yes, you can cook with pickled red onion, but adding it near the end or after cooking preserves more of its tang and crunch. It works as a topping for warm tacos, roasted vegetables, and grain bowls.
Vitamins
B6
0.04mg · 2% DV
Folate
4.8µg · 1% DV
Vitamin C
1.05mg · 1% DV
B1
0.01mg · 1% DV
Minerals
Sodium
105mg · 5% DV
Manganese
0.04mg · 2% DV
Copper
0.02mg · 2% DV
Potassium ⭐
45mg · 1% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 11 calories in 2 tablespoon (diced) (30 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.
Pickled red onion is made by preserving sliced red onion in a salty, tangy brine. The sharp bite mellows as it sits, while the slices keep some crunch; the exact balance of sourness and salt depends on the brine and preparation.
It is served around the world as a bright, crisp topping for salads, sandwiches, tacos and grilled foods, or alongside rich dishes to cut through their heaviness. At 36 calories per 100 g, it is a light condiment, though it can be salty. Use a modest spoonful, or rinse it briefly if you want a milder taste, and pair it with fresh herbs or beans.
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 3
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
0.01g
MONOUNSATURATED
0g
POLYUNSATURATED
0.01g
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Nutrition data compiled from USDA FoodData Central and scientific sources.