Mashed Potatoes and Peas

Directions

1. 1
   Peel and cut the potatoes crosswise into 1 1/2-inch-thick slices.
2. 2
   Place the slices in a medium saucepan, and cover with cold water.
3. 3
   Bring to a boil over medium heat; add 1 tablespoon salt.
4. 4
   Reduce to a low simmer, and cook until the potatoes are tender when pierced with a knife, about 15 minutes.
5. 5
   Transfer to a colander; let drain.
6. 6
   Meanwhile, melt 1 tablespoon butter in a small saute pan over medium-low heat.
7. 7
   Add the peas, and cook until they are tender and bright green, 4 to 5 minutes.
8. 8
   Transfer to the jar of a blender, and add the milk; blend until the mixture is smooth and combined.
9. 9
   While still hot, pass the potatoes through a ricer or food mill into a large heatproof bowl.
10. 10
    Stir with a wooden spoon until they are smooth, about 1 minute.
11. 11
    Using a whisk, incorporate the remaining 4 tablespoons butter.
12. 12
    Whisking constantly, add the pureed pea mixture, and season with salt and pepper.
13. 13
    Serve immediately, or keep warm over a pan of simmering water.