Gouache I found a very good description of gouache in Ralph Mayer's "The Artist's Handbook". This is an excellent book we refer to it quite often every day. According to Ralph Mayer..."Gouache is opaque watercolor. It is separate and distinct from the kind of transparent painting on fine brilliant white handmade paper which we know as watercolor. A gouache painting can if one pleases be painted in deliberately applied smooth flawless fields of color and with precise lines; but the use to which gouache is customarily put is a painting that gives the effect of free spontaneous flowing or robust dashing brushstrokes. A well-painted gouache picture of this genre should have no very heavy impasto or abnormal thickness of paint layer or the paint will crack; yet is has the effect of seeming to be thicker or "juicer" than it actually is. However unlike watercolor which is more than a colored stain on the paper gouache paint has a definite appreciable film thickness and creates an actual paint layer." We offer several excellent grades of artist quality gouache. M. Graham is a new line for us in this category. We have had tremendous feedback on its quality and workability.