01 -
3 garlic cloves, peeled.
02 -
3 pounds of russet or Yukon Gold potatoes, peeled and chopped into chunks.
03 -
1/2 cup unsalted butter (1 stick), plus a little extra for serving.
04 -
1 1/2 teaspoons sea salt, with some for the boiling water.
05 -
1 cup whole milk.
06 -
Freshly ground black pepper, as much as you like.
07 -
Optional: 1/4 to 1/2 cup sour cream.
08 -
Chopped chives to sprinkle on top.