Shortbread
["2 c. sifted flour", "1/4 tsp. baking powder", "1/2 c. confectioners sugar", "1/4 tsp. salt", "1 c. margarine"]
["Sift together the flour, baking powder and salt.", "Cut the shortening into confectioners sugar as you do when cutting shortening into flour for pastry, then add flour mixture.", "Blend thoroughly.", "About halfway through the mixture (blend thoroughly), use your hands.", "Chill until easy to handle, then roll out on lightly floured board to 1/4-inch thickness.", "Cut into squares or diamonds.", "Place on ungreased cookie sheet about an inch apart. Bake at 350\u00b0 until a delicate brown, 20 to 25 minutes."]
["flour", "baking powder", "confectioners sugar", "salt", "margarine"]