Shortbread is a type of biscuit (American English: cookie) traditionally made from one part white sugar, two parts butter, and three parts flour (by weight). The use of plain white (wheat) flour is common today, and other ingredients like ground rice or cornflour are sometimes added to alter the texture. Also, modern recipes often deviate from the pure three ingredients by splitting the sugar portion into equal parts granulated sugar and icing sugar (powdered sugar in American English) and many further add a portion of salt.