Tom's Perfect Mashed Potatoes

Instructions

1. Cook the potatoes: Heat oven to 250 degrees F. Place the potatoes in a pot and fill with enough water to cover.
2. Add the salt and bring to a boil over high heat.
3. Reduce the heat to medium and simmer until potatoes are tender -- 12 to 15 minutes.
4. Drain the potatoes, transfer to a baking pan, and place in the oven until thoroughly dried out -- 7 to 8 minutes.
5. (Shake the pan occasionally to ensure all excess water evaporates.)
6. Puree the potatoes: Heat the milk in a small saucepan until it simmers.
7. Mash the potatoes until smooth, taking care not to overwork them.
8. Alternately add the butter and milk in thirds -- gently folding with a rubber spatula.
9. Stir in the pepper.