Chef John's Colcannon


Colcannon is probably my favorite St. Patrick's Day recipe. It combines the lovely, spring-is-finally-here-greenness of kale and leeks with the always alluring comfort of buttery mashed potatoes.

Prep Time:
15 mins
Cook Time:
20 mins
Total Time:
35 mins
6 servings


  • 3 large russet potatoes, peeled and quartered

  • 2 tablespoons butter at room temperature

  • 4 ounces kale, trimmed and chopped

  • 1 leek, light parts only, rinsed and chopped

  • 1 bunch green onions, chopped, white and green parts separated

  • 2 tablespoons butter at room temperature

  • salt and ground black pepper to taste

  • ¼ cup heavy whipping cream

  • 2 tablespoons butter, for serving

  • ¼ cup green onions to garnish


  1. Boil potatoes in a large pot of salted water until tender, about 10 minutes. Drain and transfer potatoes to a large bowl. Add 2 tablespoons butter and lightly mash the potatoes.

  2. Boil kale and leeks in a large pot of water until tender, 5 to 7 minutes. Drain and transfer kale and leeks to a blender. Add white parts of the green onions and 2 more tablespoons butter; blend until smooth, scraping down sides as needed, 1 to 3 minutes.

  3. Stir pureed kale mixture into the bowl of potatoes and continue to mash. Season with salt and black pepper to taste. Add cream and stir until desired texture. Top with 2 tablespoons butter and green parts of the green onions.

Chef's Note:

You can substitute kale with other leafy greens such as Swiss chard or cabbage.

Nutrition Facts (per serving)

310 Calories
16g Fat
40g Carbs
6g Protein
Nutrition Facts
Servings Per Recipe 6
Calories 310
% Daily Value *
Total Fat 16g 20%
Saturated Fat 10g 49%
Cholesterol 44mg 15%
Sodium 140mg 6%
Total Carbohydrate 40g 14%
Dietary Fiber 6g 21%
Total Sugars 3g
Protein 6g
Vitamin C 69mg 344%
Calcium 96mg 7%
Iron 3mg 15%
Potassium 1014mg 22%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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