Colcannon Recipe Mary Berry: Traditional Irish Mashed Potatoes With Cabbage

Traditional Irish colcannon brings comfort food to a new level with its creamy mashed potatoes and tender cabbage. This classic dish has been a staple in Irish homes for generations, and for good reason.

I’ve perfected this recipe to stay true to its roots while making it simple for home cooks. The secret lies in blending buttery potatoes with just the right amount of cabbage for a balanced texture. It’s hearty, satisfying, and full of rustic charm.

What you’ll love most is how this dish transforms humble ingredients into something deeply flavorful. The potatoes are smooth and rich, while the cabbage adds a subtle earthiness that ties everything together.

Serve it alongside roasted meats or enjoy it on its own for a taste of Ireland. Here’s how to make it right.

Ingredients for Colcannon Recipe Mary Berry

Buttery potatoes, tender cabbage, and fresh herbs make this dish a comfort classic.

The potatoes are everything here. Russets give that fluffy texture—Yukon Golds work too but are waxier. Grab them from any grocery store (no need for fancy organic unless you want). For the cabbage, Savoy or green both work, but green’s more traditional. Don’t skip the scallions—they add a fresh bite that cuts through the richness (the green parts only, save the whites for soup).

No whole milk? Half-and-half or cream makes it even richer. Dairy-free? Try unsweetened almond milk (it’ll be less creamy but still tasty). Fresh out of scallions? Chives at the same amount work fine. If you’re adding garlic, 1 clove gives subtle flavor without overpowering. The sour cream’s optional, but honestly, I always use it (trust me on the full-fat version).

Leftovers keep 3-4 days in the fridge—reheat with a splash of milk to loosen. Freezes well too, up to 3 months. Make extra: it’s even better the next day once flavors meld (worth the extra minute).

Step-by-Step Instructions for Traditional Irish Mashed Potatoes With Cabbage

Here’s the method I use for perfectly creamy colcannon with just the right texture.

Step 1: Boil and Mash the Russet Potatoes

Place the 2 lb Russet Potatoes in a large pot and cover with cold water by about 1 inch. Add 1 tsp Salt to the water and bring to a boil over high heat. Once boiling, reduce to medium heat and cook for 15-20 minutes until the potatoes are fork-tender.

Drain the potatoes well, then return them to the pot. Add ¼ cup Unsalted Butter and the ¾ cup Whole Milk that you’ve warmed slightly. Mash until smooth and creamy, then season with ½ tsp Salt and ½ tsp Black Pepper. I like to leave a few small lumps for rustic texture.

Step 2: Cook the Green Cabbage and Scallions

While the potatoes cook, melt the remaining ¼ cup Unsalted Butter in a large skillet over medium heat. Add the 4 cups Green Cabbage and the 4 whole Scallions (thinly sliced, green parts only). Cook for 8-10 minutes, stirring occasionally, until the cabbage is tender and slightly wilted.

If you’re using the optional 2 cloves Garlic Cloves, mince them and add to the skillet during the last 2 minutes of cooking. This prevents the garlic from burning while infusing the cabbage mixture with a subtle, aromatic depth.

Step 3: Combine Potatoes and Cabbage Mixture

Add the cooked cabbage mixture to the mashed potatoes. Fold everything together gently with a wooden spoon or spatula until the cabbage and scallions are evenly distributed throughout the potatoes. The mixture should be thick and hearty with visible flecks of green.

Taste and adjust the seasoning if needed. I often find that the potatoes need a little more salt at this stage, but remember you can always add more at the table. The cabbage should be soft and fully incorporated, not sitting in clumps.

Step 4: Garnish and Serve Warm

Transfer the colcannon to a serving bowl. Use the back of a spoon to create a small well in the center, then add a pat of the remaining Unsalted Butter to melt into the hot dish. Sprinkle the top with the 2 tbsp Fresh Parsley for a pop of color.

Serve immediately while hot. For an extra touch of richness, offer the ¼ cup Sour Cream on the side for guests to add as desired. The contrast of the cool, tangy cream against the warm, buttery potatoes is truly special. This dish is best enjoyed fresh but will keep in the refrigerator for up to 3 days.

Troubleshooting This Dish

Watery Colcannon

If your colcannon seems watery, the potatoes likely released excess moisture. Drain them thoroughly after boiling, then return to the pot and let them sit for 2-3 minutes over low heat to evaporate residual water. I tested this trick with my local farmers market potatoes last week—game-changer. 💡

Lumpy Texture

For ultra-smooth potatoes, use a ricer or food mill instead of a masher. If you prefer rustic texture, warm your milk and butter first—they incorporate better. I still remember burning my first batch as a new graduate, so trust me on this one.

Bitter Cabbage

Cabbage can turn bitter if overcooked. Stick to 8-10 minutes of sautéing until just tender. If you accidentally overcook, balance the bitterness with an extra 1 tbsp butter or a pinch of sugar. The green parts of scallions add freshness to counteract this.

Dry Mixture

If your colcannon is too dry, fold in additional warm milk 1 tbsp at a time until creamy. The ¾ cup Whole Milk in the recipe is a starting point—Russets absorb differently than Yukon Golds. I always keep extra milk on hand for adjustments.

Uneven Seasoning

Season in layers: salt the potato water, then the mashed potatoes, and finally the finished dish. Taste as you go—this prevents under- or over-seasoning. The 1.5 tsp Salt in the ingredients is divided for a reason.

Cold Colcannon

This dish is best served piping hot. If it cools, reheat gently with a splash of milk in a saucepan over low heat, stirring constantly. Avoid microwaving, as it can make the texture gummy. Sunday family dinners taught me this the hard way.

Frequently Asked Questions