Chicken broth and milk make these mashed potatoes rich; sour cream gives them tang.
Place potato in a saucepan, and cover with water. Bring to a boil. Reduce heat; simmer 15 minutes or until tender.
Drain and return potato to pan. Add milk and broth; mash to desired consistency. Cook 2 minutes or until thoroughly heated, stirring constantly. Stir in sour cream, salt, and pepper. Top with butter.
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