There are two points
at which you can stop if you want to do some preparations in advance of
your dinner. You can stop after you peel and cut them and keep the
potatoes in a bowl covered with cold water in the fridge until you are ready to
cook them (up to 24 hours) or you can stop after you drain the cooked
potatoes and keep them in a covered bowl in the fridge until you are
ready to return them to a pot to heat them up again and add the butter.
5 pounds potatoes |
1 stick butter |
milk |
sour cream (optional) |
salt and pepper |
Bring large pot of salted water to full rolling boil. You want the potatoes to have lots of room and water to boil in. While waiting for the water to boil, peel the potatoes. Then cut small potatoes into 4 pieces, medium potatoes into 6 pieces, and large potatoes into 8 pieces. Transfer to colander and rinse with cold water to remove any dirt.
Boil potatoes, in a rolling boil, for approximately 10-20 minutes. Start checking them at 10 minutes and every 2-5 minutes after to prevent overcooking. Potatoes are done when very easily pierced with a fork but not mushy or completely falling apart. Drain water off potatoes.
Return potatoes to dry pot and return to burner on low heat. Add butter (I usually use about 1 stick of butter for 5 pounds of potatoes) and continue stirring to melt butter and to evaporate excess water from the potatoes. You want the moisture to come from the butter and milk, not from the water. When potatoes start falling apart and getting a little dry and powdery you can turn off the heat and start adding milk and continue stirring and mashing. Continue adding small amounts of milk (and or sour cream) while stirring and mashing until desired consistency is reached. Salt and pepper to taste.
Use a hand masher for 80-90% of the mashing. Then transfer potatoes to a large plastic bowl and use a hand mixer (on medium to high) and whip them for about 30 second to fluff them up and remove any big lumps. Overmixing with the electric mixer will result in a glue like texture. Transfer to serving dish and enjoy!