Martha Stewart's Lemon and Caper Mashed Potatoes

From marthastewart.com.

• Ready In: 35 mins
• Serves: 4

Ingredients

• 2  lbs yukon gold potatoes, peeled and quartered
•  coarse salt
• 6  tablespoons unsalted butter
• 3⁄4 cup milk
• 2  teaspoons fresh lemon juice, plus
• 2  teaspoons  finely grated lemon zest
• 3  tablespoons capers, drained and coarsely chopped (I skipped the chopping part)
• 1⁄4 cup  coarsely chopped fresh flat-leaf parsley (fresh only!)
•  fresh ground black pepper (I used white pepper)

Directions

1. Place potatoes in a large saucepan, and fill with enough water to cover potatoes by 1 inch. Bring to a boil over high heat.
2. Add a generous amount of salt; reduce heat to a simmer. Cook until potatoes are tender when pierced with a paring knife, about 15 minutes.
3. Drain; place the potatoes back in the pot and using a potato masher or potato ricer, mash potatoes.
4. Meanwhile, in a medium saucepan over medium heat, combine 5 tablespoons butter, milk, lemon juice, zest, and capers.
5. Heat until butter is melted and the mixture is warm to the touch.
6. Fold the milk mixture and parsley into the mashed potatoes, and season with salt and pepper.
7. Dot with remaining tablespoon butter just before serving.
8. Easy!