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Red onions

Red onions are fresh reddish-purple bulbs with crisp, mildly pungent layers, used raw in salads and garnishes or cooked in savoury dishes.

Red onions — illustrative ingredient image

About Red onions

Red onions are round to slightly elongated bulbs with reddish-purple outer skin and pale, purple-tinged layers inside. Their crisp raw texture and flavour are often mildly pungent and sweet, though strength varies by variety and growing conditions.

They are used raw in salads and garnishes or cooked in many savoury preparations. Raw, cooked, pickled and dried onion forms differ in water content and added ingredients; the term here refers to fresh onion bulbs.

Ingredient type
whole food

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Where red onions appears

0 linked foods

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Food connections are still being added.

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Name examples awaiting language review. Confirm the specific food or product.

Local names for red onions

Names and romanised forms to recognise on menus and labels.

English

Red onion

Available names only. Languages may be spoken in other countries; a name alone does not identify every ingredient in a dish.

Red onions nutrition & diet

Red onions nutritional value

Onions, red, raw

Per 100 g of the edible portion in the recorded USDA food form.

Calories
44kcal
Protein
0.9g
Carbs
9.9g
Fat
0.1g

Reference values per 100 g for the displayed USDA form. Varieties, recipes, brands and preparation can differ.

Fresh raw bulbs differ from cooked, dried or pickled onions, which may have concentrated contents or added ingredients.

Dietary compatibility

  • Vegan
    Not established
  • Vegetarian
    Not established
  • Pescatarian
    Not established
  • Keto
    Not established
  • Paleo
    Not established
  • Low-carb
    Not established
  • Halal
    Not established
  • Kosher
    Not established
What these diet assessments mean
Vegan · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Vegetarian · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Pescatarian · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Keto · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Paleo · Not established
The ingredient form and processing have not been assessed against this dietary pattern.
Low-carb · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Halal · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish halal status.
Kosher · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish kosher status.

For the plain ingredient · Awaiting review. Diet compatibility is not allergy suitability or halal/kosher certification. Keto and low-carb depend on the portion.

Reviewed ingredient entryIngredient reference · Preparations vary

AI-generated illustration for visual context. It does not identify a particular product or establish allergen content.

Sources & review

Nutrition reference: USDA FoodData Central — Onions, red, raw ↗. Values are scaled from 100 g of the recorded edible form. Individual portions have no assumed fixed weight.

Expanded overview, name examples and nutrition notes are database drafts awaiting editorial review. Numeric nutrition values, where shown, have their own source and food-form reference.

The ingredient description and dish connections come from the draft catalogue and may change after review.

Last recorded verification: .