Three Potato Mash

Ingredients

1 sweet potato, peeled, and, cut, into one inch cubes
1 Yukon Gold potato, peeled, and, cut, into one inch cubes
1 russet potato, peeled, and, cut, into one inch cubes
1 piece of fresh horseradish, ready to grate
2 good sized pieces of cold butter
1/2 cup sour cream
salt
white pepper

Directions

1. Place the cubed potatoes in a large pot and cover with cold, salted water.
2. Bring to a boil and cook, covered, until the potatoes are tender.
3. Drain the water and return the potatoes to the heat to allow the excess water to evaporate. Remove from heat.
4. Grate a good portion of fresh horseradish.
5.Mash the dried potatoes with a potato masher adding the cold butter a little at a time until it is all mixed in.
6. Add the sour cream and the grated horseradish.
7. Stir together. Season with salt and pepper.