Step 1: Prepare potatoes for boiling

Add 1 tablespoon of coarse sea salt to a large pot. Add 8 peeled potatoes, cut into 1.5-inch cubes. Add cold water to cover the potatoes.

Step 2: Boil potatoes

Cover the pot and bring to a boil. Once boiling, put the lid ajar to prevent overflow. Boil for 15 minutes or until tender.

Step 3: Check for tenderness

The best way to check if they're done is to insert a fork or a knife into the center; if it goes in with no resistance, then they're ready.

Step 4: Drain and mash potatoes

Drain the potatoes well and return them to the pot. Mash the potatoes until mostly smooth.

Step 5: Add butter

Add 1/2 cup (113g) of butter to the mashed potatoes and mash again until combined and melted.

Step 6: Add sour cream and milk

Add 1/2 cup (120g) of sour cream and 1/2 cup (120ml) of warm milk to the potatoes. Mash until nicely incorporated and creamy.

Step 7: Add horseradish

Add 1/4 cup (60g) of creamy horseradish to the potatoes and mash to blend thoroughly.

Step 8: Season

Season with 1 teaspoon of garlic salt, 1/2 teaspoon of freshly ground mixed peppercorns, and 2 tablespoons of fresh chopped chives.

Step 9: Final mix and taste

Mix one more time, making sure there are no lumps. Taste and adjust seasoning if needed before serving.

• To check if potatoes are done, insert a fork or knife into the center; if it goes in with no resistance, they are ready.

• When boiling potatoes, put the lid ajar to prevent overflow on the stovetop.

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