Preheat the oven to 425°F., To make the crust: Shape your prepared pie crust dough into a 12" to 13" round, and place it in a lightly greased 9" pie pan, crimping the edges. Bake the crust for 10 minutes; there's no need for pie weights. Take the crust out of the oven, and reduce the oven heat to 375°F., To make the filling: While the pie crust bakes, cut the asparagus into 1" pieces on the diagonal., Mince the chives and set aside. Beat together the eggs, flour and buttermilk., Pour a bit of custard on the bottom of the pre-baked crust to seal it and keep juices from soaking in. Add the asparagus and chives, saving some asparagus tips to decorate the top., Sprinkle the cheese over the asparagus and chives. Pour the remainder of the custard over the whole thing and place asparagus tips, in spoke fashion, around the outside edge; this makes a nice garnish., Bake the quiche for 35 to 45 minutes, or until the custard is firm and a knife inserted in the middle comes out clean., Remove the quiche from the oven, and serve warm or at room temperature. Refrigerate any leftovers.