Place the potatoes into a pot and cover with water. Sprinkle a little salt over. Place the pot on a high flame and bring to a boil. Lower the flame to a simmer and simmer for 30 minutes, or until the potatoes are easily pierced with a fork.
Drain the potatoes and place back in the pot over a small flame.
Dry out the potatoes for 3-5 minutes then smash and add in the stock, butter, sour cream and seasonings. Mix well and adjust salt and pepper. Turn off the flame.