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Thinly sliced red onion rings and curved strips are glossy and translucent, with vivid magenta-purple edges fading to pale pink and white, piled loosely in a small serving dish.
●Low GI

Pickled red onion Calories

Low-calorie, tangy-sweet, may be high in sodium

In season: Spring · Summer · Autumn · Winter

CALORIES · 100 G

50kcal

GI

15low

POTASSIUM · 100 G

120mg

FIBER · 100 G

1.6g

Quick answer

2 tablespoon (shredded) of Pickled red onion (30 g) has 15 calories. That works out to 50 calories per 100 g. It contains 3.3 g of carbs, 0.2 g of protein, 0 g of fat and 0.5 g of fiber. Its glycemic index is 15 (low), so it raises blood sugar slowly.

Pickled red onion Nutrition Facts

Selected: 2 tablespoon (shredded) · 30 g

15

KCAL / 30G

Carbs

3.3g

· 1% DV

Protein

0.2g

· 0% DV

Fat

0g

· 0% DV

Fiber

0.5g

· 2% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 94% · Protein 6% · Fat 0%

Pickled red onion nutrition facts table · 2 tablespoon (shredded) (30 g)

NutrientAmount% DV
Calories15 kcal
Total fat0 g0%
Saturated fat0.01 g0%
Trans fat0 g
Sodium126 mg5%
Total carbohydrate3.3 g1%
Fiber0.5 g2%
Protein0.2 g0%

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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How Many Calories in 2 Tablespoons of Shredded Pickled red onion?

ServingAmountCalories
2 tablespoon (shredded)30 g15 kcal
1 piece (small)10 g5 kcal
1 tablespoon (shredded)15 g8 kcal
1 serving (small)25 g13 kcal
0.25 cup (shredded)40 g20 kcal
1 serving (medium)50 g25 kcal
½ cup (shredded)80 g40 kcal
1 serving (large)90 g45 kcal
100 g100 g50 kcal
1 cup (shredded)160 g80 kcal

Calculated from 50 calories per 100 g.

Frequently Asked Questions About Pickled red onion

How do you make quick pickled red onion?

To make quick pickled red onion, thinly slice the onion and pack it into a clean jar. Pour over a mixture of vinegar, water, salt and optional sugar, making sure the slices are covered. Let it cool, then refrigerate before serving.

How long does pickled red onion last in the fridge?

Homemade pickled red onion usually keeps for about two weeks in a clean, sealed jar in the refrigerator. Keep the slices submerged in the brine, and discard them if you notice mold, an unpleasant smell or other signs of spoilage.

What vinegar is best for pickled red onion?

White vinegar gives pickled red onion a sharp, clean taste, while apple cider vinegar makes it milder and slightly fruity. Both work well. Balsamic vinegar is less suitable if you want the onion’s bright color and fresh, tangy flavor.

Does pickled red onion have to be fermented?

No, most quick pickled red onion is not fermented. It is preserved briefly in a vinegar brine, so it does not develop the same fermentation process or live cultures as traditionally fermented vegetables.

Why is my pickled red onion bitter?

Pickled red onion can taste bitter if the onion itself is unusually sharp or if the brine contains an overly strong vinegar. Try a milder vinegar or balance the brine with a little sugar; slicing the onion thinly also helps the flavor mellow.

Can you reuse pickled red onion brine?

It is best not to reuse pickled red onion brine for a fresh batch. Onion juices and handling can change the brine’s acidity, making its preserving strength unreliable; prepare fresh brine for each new jar.

What do you eat pickled red onion with?

Pickled red onion goes well with tacos, burgers, sandwiches, grain bowls and salads. Its sharp, tangy flavor cuts through rich foods, so add it as a topping just before serving rather than cooking it into the dish.

How do you keep pickled red onion crunchy?

For crunchy pickled red onion, cut the slices a little thicker and refrigerate them promptly. Avoid pouring very hot brine over the onion and avoid leaving the slices at room temperature for long, since heat and extended soaking soften them.

Can you freeze pickled red onion?

You can freeze pickled red onion, but it will usually lose its crisp texture as it thaws. Freezing is better suited to onion that will be added to cooked dishes than to slices served as a fresh, crunchy topping.

Can you make pickled red onion without boiling the brine?

Yes, you can make pickled red onion without boiling the brine. Stir the vinegar, water, salt and any sugar until dissolved, then pour the mixture over the onion; warming it is convenient but not essential.

Pickled red onion Vitamins & Minerals

Vitamins

B6

0.04mg · 2% DV

Vitamin C

1.35mg · 2% DV

Folate

5.4µg · 1% DV

B5

0.03mg · 1% DV

Minerals

Sodium

126mg · 5% DV

Manganese

0.04mg · 2% DV

Copper

0.01mg · 1% DV

Potassium ⭐

36mg · 1% DV

Pickled red onion Glycemic Index

GLYCEMIC INDEX

15
Low
0 Low5570100

GLYCEMIC LOAD

0.6
Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Pickled red onion

To burn the 15 calories in 2 tablespoon (shredded) (30 g):

🚶

4min

Walking (5 km/h)

🏃

2min

Running (8 km/h)

🚴

2min

Cycling

🏊

2min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

What is Pickled red onion?

Pickled red onion is made by soaking thinly sliced red onion in vinegar, usually with salt and sometimes sugar. The quick pickle turns the slices bright pink and gives them a sharp, lightly sweet flavour. It is a simple condiment found in many cuisines rather than a dish tied to one clear place of origin.

It is especially familiar as a topping for tacos, but it also adds crunch and acidity to burgers, sandwiches, salads and grain bowls. Its tang cuts through rich or spicy foods, so a small amount can bring a meal into balance. Pickled red onion is low in calories, though the brine can be salty; drain it well or rinse briefly if you prefer a milder, less salty bite.

How Nutritious Is Pickled red onion?

Nutrient density

Medium

42/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

44/ 100

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.

Is Pickled red onion Processed?

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.

Does Pickled red onion Contain Allergens?

No known major allergens

Gluten free
Dairy free
Eggs free
Peanuts free
Tree nuts free
Fish free
Soy free
Sesame free

Which Diets Is Pickled red onion 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

Pickled red onion Fat Profile

SATURATED

0.01g

MONOUNSATURATED

0g

POLYUNSATURATED

0.01g

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Nutrition data compiled from USDA FoodData Central and scientific sources.