Put the potatoes into a medium saucepan and rinse twice by covering with water then draining.
After 2 rinses, cover potatoes with water again.
Add 1 Tablespoon salt to the water.
Cover the pan and bring to a boil over high heat.
Once boiling, remove the lid and boil gently until potatoes are tender, 20-30 minutes.
Drain water from pan.
Using a hand-held electric mixer smash the potatoes a bit.
Add the butter and mix with the mixer on high until butter is melted.
Then add the milk and whip with the mixer on high until potatoes are smooth.
If potatoes are too thick for your taste, add more milk.
Add the salt and pepper to your taste.