Colcannon is a traditional Irish dish that pairs creamy mashed potatoes with tender blanched kale and a generous amount of butter. The potatoes are boiled until soft and mashed smoothly before being combined with kale that’s been lightly wilted to preserve its texture and color. Infusing milk with sliced spring onions adds a subtle sweetness and depth to the dish. Seasoned simply with salt and pepper, this side brings warmth and comfort to any meal. Serve it hot with an extra pat of butter melting on top for a truly indulgent experience.
The smell of butter melting into potatoes still takes me back to a tiny Dublin kitchen where I first learned that colcannon isn't just mashed potatoes with greens mixed in. My friend's grandmother would sing while she worked, her hands moving faster than I could follow, transforming humble ingredients into something that felt like a hug on a plate. That rainy afternoon taught me that the simplest foods often hold the most magic.
Last winter, during that stretch where it felt like spring would never arrive, I made this for friends who'd just moved into a new apartment with barely any furniture. We sat on the floor eating from mismatched bowls, and somehow this dish made everything feel right. The kale was from my garden, still holding onto that sweet frost-kissed flavor that only winter brings.
Ingredients
- 900 g floury potatoes: Russet or Yukon Gold work best here because they break down into that fluffy cloud-like texture that absorbs all the butter and milk
- 200 g kale: Remove those tough stems and slice the leaves into ribbons so they melt into the potatoes rather than sitting in separate pieces
- 4 spring onions: These add a gentle bite that cuts through all that rich dairy
- 100 ml whole milk: Full fat is non-negotiable here, it makes all the difference between creamy and just watery
- 75 g unsalted butter: Plus more for serving because this is one of those dishes that deserves to be finished properly
- Salt and freshly ground black pepper: Generous seasoning is what transforms this from side dish to centerpiece
Instructions
- Start your potatoes:
- Cover the peeled chunks with cold salted water and let them simmer away until they're tender enough to surrender to a fork
- Prep the kale:
- Blanch those green ribbons in boiling salted water for just a few minutes until they wilt, then drain them well
- Warm the dairy:
- Heat the milk with half the butter and spring onions, letting those onions steep and release all their sweet flavor
- Mash it all together:
- Drain the potatoes and mash until they're smooth and willing, then stir in that warm onion-infused milk
- Bring it home:
- Fold in the kale, season until it sings, and serve with an extra knob of butter melting right in the center
There's something almost meditative about the rhythm of mashing potatoes, watching them transform from chunky to smooth. My daughter started helping with this recipe when she was eight, standing on her step stool with the masher, determined to get every single lump. Now she makes it better than I do.
The Potato Question
I've tried waxy potatoes, thinking they'd hold their shape better, but they just don't give you that ethereal creaminess that makes colcannon so special. Floury varieties absorb the dairy like they've been waiting their whole lives for this moment.
Making It Yours
Sometimes I swap in savoy cabbage when that's what the garden gives me, or I'll add a handful of chopped cooked bacon when I'm feeding people who need something extra hearty. The bones of the recipe stay the same, but the soul changes with the seasons.
Perfect Pairings
This dish knows exactly what it wants to be served alongside, and it's not shy about telling you.
- A roasted chicken with crispy skin is its oldest friend
- Sausages with plenty of fennel seeds make this feel like a proper feast
- On its own with a simple green salad when you want something gentle and restorative
Simple food, made with care and shared with people you love, that's what colcannon is really about.
Recipe Questions
- → What type of potatoes work best in this dish?
-
Floury potatoes like Russet or Yukon Gold are ideal as they mash smoothly and create a creamy texture.
- → How should the kale be prepared before mixing?
-
Blanch the kale briefly in salted boiling water until wilted, then drain thoroughly to avoid excess moisture.
- → Can this dish be made dairy-free?
-
Yes, by substituting butter and milk with plant-based alternatives such as vegan butter and almond or oat milk.
- → What does infusing milk with spring onions add?
-
It imparts a gentle onion aroma and subtle sweet notes, enhancing the overall flavor without overpowering.
- → Is there a traditional variation of this dish?
-
Substituting kale with savoy cabbage offers a more classic Irish take, providing a slightly different texture and taste.