At Pie Source Bakery in Pie Town, New Mexico Cyndi Fowler makes only fruit and nut pies, including this popular pecan one spiked with spiced rum. She sells her pies at Pie Town's general store, but she also takes a concession trailer to nearby cities, like Grants, NM. "People want a pie from Pie Town," she says.
Make the crust: Put the flour in a large bowl and cut in the cold butter with your fingers until the mixture forms coarse crumbs. Whisk 1/3 cup ice water and the egg yolk in a liquid measuring cup. Make a well in the center of the flour mixture and pour in the yolk mixture. Gradually stir the flour into the well until a rough dough forms. Divide the dough in half and shape each half into a ball. Wrap separately in plastic wrap and refrigerate overnight. (You will need only 1 ball of dough for this pie; freeze the other ball up to 1 month.)
Flatten 1 ball of dough on a lightly floured surface, then roll out into a 12-inch round, about 1/8 inch thick. Ease into a 9-inch pie plate, fold the overhanging dough under itself and crimp the edge with your fingers; set aside.
Preheat the oven to 375 degrees F. Make the filling: Beat the butter and brown sugar in a large bowl with a mixer on medium speed until creamy, about 5 minutes. Beat in the eggs, one at a time, until combined. Beat in the corn syrup and rum until combined. Stir the pecans into the filling with a rubber spatula, then pour into the prepared crust.
Bake the pie until the crust is golden brown and the filling is bubbling, about 1 hour (cover with foil if the filling is getting too dark). Transfer to a rack and let cool completely.