Adapted from online.wsj.com
pounds russet potatoes, peeled and cut into chunks (about 6 heaping cups)
heaping teaspoon saffron threads
large garlic clove, finely chopped
cup plus 2 tablespoons whole milk
cup plus 2 tablespoons extra-virgin olive oil
Tabasco sauce or your favorite hot sauce
Place potatoes in a medium-large saucepan, then cover with cold water by 1 inch and add 1 teaspoon salt. Bring to a boil over high heat, about 15 minutes. Let cook until fork tender, 10-15 minutes more. Meanwhile, in a small lidded saucepan over low-medium heat, heat saffron, garlic and milk just until edges of milk start to bubble, about 10 minutes. Be careful not to let milk scald. Remove from heat, cover saucepan and let flavors infuse for 10 minutes. Add olive oil to milk infusion and gently reheat over low heat. Drain and mash potatoes. Fit an electric mixer with a paddle attachment and use it to whip mashed potatoes. With the motor running on low-medium speed, pour oil-milk infusion into potatoes in a slow, steady stream until velvety smooth, about 1 minute. Stir in remaining salt and Tabasco to taste. Ideally, allow purée to sit in a warm place to allow saffron flavor to fully develop, about 30 minutes.