Irish Tea Scones
["2 1/2 c. sifted all-purpose flour", "2 Tbsp. sugar", "1 Tbsp. baking powder", "1/2 tsp. baking soda", "1/2 tsp. salt", "4 Tbsp. (1/2 stick) chilled butter, cut in small pieces", "1 large egg", "1 egg white, beaten with 1 tsp. water", "2 tsp. sugar (optional)", "2/3 to 3/4 c. buttermilk"]
["Preheat oven to 425\u00b0.", "In large bowl, sift or stir together first 5 ingredients.", "Cut in butter until mixture resembles coarse crumbs.", "Make well in center; set aside."]
["flour", "sugar", "baking powder", "baking soda", "salt", "butter", "egg", "egg", "sugar", "buttermilk"]