Common questions

Is Sliced red onion healthy?

Sliced red onion scores 85/100 on Scout's independent analysis of ingredients, additives, and lab results — one of the stronger scores in Scout's catalog. Sliced red onion is a whole food with minimal processing, consisting solely of red onion.

How processed is Sliced red onion?

Sliced red onion is NOVA Group 1: Unprocessed or Minimally Processed Foods.

Which ingredients drive Sliced red onion's score?

In Scout's ingredient-by-ingredient analysis, Red onion counts in its favor. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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Sliced red onion

Name: Sliced red onion
Brand: Tesco

Tesco

Excellent

Analysis updated September 2026 · How Scout scores

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At a glance

Beneficial ingredients 1

Harmful ingredients 0

Category Vegetables

Summary

Sliced red onion is a whole food with minimal processing, consisting solely of red onion. It provides essential nutrients and antioxidants, including quercetin, which has anti-inflammatory properties. The natural sugars and fiber enhance its nutritional profile, making it a healthy choice.

Key ingredients 1

Red onion

Good

Red onion is a whole food that is minimally processed, providing essential nutrients and antioxidants. It contains quercetin, a flavonoid with anti-inflammatory and antioxidant properties. The natural sugars and fiber in red onions contribute to their nutritional value.

Benefits

Rich in antioxidants and flavonoids that may support heart health and reduce inflammation. Provides dietary fiber and essential nutrients with minimal processing.

See more about Red onion →

Processing

Group 1 · Minimally processed

Unprocessed or Minimally Processed Foods

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