- 6 large baking potatoes (about 4 1/2 pounds), peeled, cut crosswise into thirds
- 7 tablespoons extra-virgin olive oil, divided
- Place potatoes in heavy large pot. Cover with cold water. Boil over medium-high heat until potatoes are tender when pierced with fork, about 40 minutes. Drain, reserving 1 1/2 cups potato cooking liquid. Return potatoes to dry pot. Stir over medium heat until any excess liquid evaporates. Add 6 tablespoons olive oil and mash until almost smooth. Mix in enough potato cooking liquid as needed to moisten. Season to taste with salt and pepper. (Can be made 2 hours ahead. Let stand at room temperature. Rewarm over medium heat, adding more reserved cooking water as needed to moisten.)
- Transfer potatoes to large bowl. Drizzle with remaining tablespoon olive oil and serve.