Oprah's Mashed Potatoes

Yield: 6 Servings
Categories: Vegetables, Potatoes
1 1/2lbIdaho baking potatoes
1 1/2lbRed potatoes
1/2cPrepared horseradish, or to
Salt
1/2Stick butter
6ozTo 7 ounces milk
Butter
Snipped green onions*
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