Irish Shortbread Cookies
["1 lb. salt-free butter", "1 c. sugar", "4 1/2 c. flour", "1/2 c. rice flour"]
["Cream butter and sugar.", "Combine flours, then add to butter and sugar.", "Press dough into two 8-inch cake pans.", "Prick all over with fork.", "Bake at 300\u00b0 for 50 to 60 minutes.", "Cut cookies while still warm, then let cool and remove from pan."]
["salt", "sugar", "flour", "rice flour"]