Instantized flour is a low-protein, pre-gelatinized wheat flour to which some malted barley flour has been added. It has been formulated to dissolve quickly in either hot or cold liquids, and is most often called for to thicken gravies and sauces. Because of its low-protein content, it is also sometimes used in making pie crusts and other recipes that call for cake flour, which is also lower in protein than all-purpose flour. Some bakers find the slightly acidic taste of cake flour objectionable and prefer the instant flour. Two well-known commercial brands are "Wondra" and "Shake & Blend".