Wash potatoes, peel if you’d like (we don’t), cut into 1" cubes and place in a medium sized pot.

Cover potatoes with hot water, boil until tender (about 20 minutes).

Drain potatoes well, return to the pan. Make sure there’s no residual water - if there is, allow it to cook off over low heat for a few minutes.

Add butter and sour cream to the pan, mash until as smooth as you’d like it.

Add cheese, continue mashing until melted and well incorporated/

Season with salt and pepper, to taste.