1. Place potatoes in a large saucepan; cover with water. Bring to a boil; cook 15 minutes or until tender. Drain.
2. Press potatoes through a food mill or potato ricer into a large bowl. Add butter, stirring until melted. Stir in milk and remaining ingredients.
Tip: If you want to make these mashed potatoes a few hours ahead of time, simply keep them warm over a double boiler on very low heat. Keep in mind that you may need to add a little milk before serving if the consistency becomes too thick.