Red Onion
Red onions are a vibrant allium with a beautiful purple hue and a sharp, pungent flavor. They are commonly used raw in salads, sandwiches, and as a garnish, adding a delightful crunch and a touch of sweetness. When cooked, their flavor mellows, becoming sweeter and more complex, making them a versatile ingredient in many savory dishes.
Shared meals of this food: 2 · Data updated 2026-10-20
Photos from real users
Nutrition range from shared meals
Per serving
Calories16 kcal16–20 kcal
Carbs4 g4–4 g
Protein0.3 g0.3–0.5 g
Fat0 g0–0 g
Median · 25–75% range · Valid samples 2
Per 100g
More weight samples needed.
Estimated post-meal glucose (AI)
135mg/dL135–155
AI estimates from shared meals, calculated from a 100 mg/dL baseline. Not measured values.
Measured glucose
Shared meals with a measured record: 0
Individual values are only visible to contributors in the app.
Shared meals of this food
Answered with real data
- How many calories is a serving of Red Onion?
- The 2 meals shared so far ranged from 16 to 20 kcal.
- How many carbs does Red Onion have?
- The 2 meals shared so far ranged from 4 to 4 g.
- How much does Red Onion raise post-meal glucose?
- Across 2 shared meals the AI estimates ranged from 135 to 155 mg/dL.
- How many calories is Red Onion eaten with Black Olives, Salmon?
- Across 2 shared meals containing Red Onion the median was 1250 kcal. Those meals also included Black Olives, Salmon.
