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Kale

Kale is a dark leafy green cruciferous vegetable in the Brassicaceae family, related to cabbage, broccoli, and collard greens.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Kale is a dark leafy green cruciferous vegetable in the Brassicaceae family, related to cabbage, broccoli, and collard greens. It is eaten raw or cooked and is widely used in salads, soups, smoothies, sautés, and roasted dishes. In Canada, kale is widely available and commonly used in seasonal vegetable dishes, and is also a popular cool-season crop in home gardens and local produce markets.

Description

Kale is a leafy green cruciferous vegetable belonging to the Brassicaceae family, which includes Cabbage, broccoli, and collard greens. The leaves are edible and can be dark green or purple, with either curly or flat surfaces. Kale is commonly sold whole or pre-chopped.

Nutrition

Kale is notable for its high levels of vitamins A, C, and K, along with fibre, calcium, potassium, iron, carotenoids, and other antioxidants. It is also relatively low in calories, making it a nutrient-dense vegetable.

Culinary uses

Kale can be eaten raw in salads, often massaged with dressing to soften it, or blended into smoothies. It can also be cooked in soups, stir-fries, casseroles, or roasted into kale chips. Cooking kale can soften its texture and reduce bitterness, especially if the central rib is removed. Many recipes remove the tough central stem first.

Health and diet

Kale is considered a nutrient-dense vegetable and is commonly included in healthy eating patterns. Its nutritional value is one reason it is often described as a superfood, although that term is not a scientific classification. Health effects depend on the overall diet and portion size.

Key facts

  • Kale is a cruciferous leafy vegetable with edible leaves and a tough central stem.
  • Kale is rich in vitamins A, C and K, and also contains fibre, calcium, iron, potassium, carotenoids, and other antioxidants.
  • It can be eaten raw, steamed, sautéed, roasted, baked, or blended into smoothies.
  • Cooking kale can soften its texture and reduce bitterness, especially if the central rib is removed.
  • Kale is often described as nutrient-dense, but health effects depend on the overall diet and portion size.
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Canadian context

Kale is widely available in Canada and is commonly used in salads, soups, smoothies, and seasonal vegetable dishes. It is also a popular cool-season crop in Canadian home gardens and local produce markets.

Frequently asked questions

Is kale healthy?
Kale is generally considered a healthy food because it is rich in vitamins A, C, and K, fibre, and antioxidants, and is low in calories.
How to cook kale?
Kale can be steamed, sautéed, roasted, baked, or added to soups and stir-fries. Many recipes remove the tough central stem first.
What is kale?
Kale is a leafy green cruciferous vegetable in the Brassicaceae family, related to cabbage, broccoli, cauliflower, and collard greens.
Kale nutrition facts
Kale is a source of vitamins A, C, and K, fibre, calcium, potassium, iron, and antioxidants. It is low in calories and nutrient-dense.
Kale vs spinach which is better?
Neither is universally better. Kale generally has more vitamin C and vitamin K, while spinach is often higher in folate and some minerals. The better choice depends on dietary needs and taste.
How to eat kale?
Kale can be eaten raw in salads, massaged with dressing to soften it, blended into smoothies, or cooked in soups, stir-fries, casseroles, and roasted snacks.

References

  1. BBC Good Foodhttps://www.bbcgoodfood.com/health/nutrition/health-benefits-kale
    Supports: Kale is a cruciferous vegetable with edible leaves; it can be eaten raw or lightly cooked; leaf shape and colour vary.
  2. Cleveland Clinichttps://health.clevelandclinic.org/kale-benefits
    Supports: Kale is a fibrous leafy green cruciferous vegetable in the Brassicaceae family.
  3. PubMed Centralhttps://pmc.ncbi.nlm.nih.gov/articles/PMC12610807/
    Supports: Kale is rich in vitamins, minerals, fibre, glucosinolates, polyphenols, carotenoids, flavonoids, and chlorophylls.
  4. Medical News Todayhttps://www.medicalnewstoday.com/articles/270435
    Supports: Kale contains fibre, antioxidants, calcium, vitamins C and K, iron, and other nutrients; it can be used in salads, soups, and smoothies.
  5. MedlinePlushttps://medlineplus.gov/ency/patientinstructions/000729.htm
    Supports: Kale can be eaten raw, added to smoothies, soups, stir fries, pasta, steamed, sautéed, or roasted into chips.
  6. Mayo Clinic Health Systemhttps://www.mayoclinichealthsystem.org/hometown-health/speaking-of-health/the-many-types-and-health-benefits-of-kale
    Supports: Kale is nutrient-dense and can be steamed, stir-fried, roasted, eaten raw, blended into smoothies, or made into chips.