Like QoR Modern Watercolors, these grounds combine the best of tradition with the latest technical advances, resulting in remarkable quality and performance. - QoR Watercolor Medium - Cold Pressed Ground, 237 mlGolden Qor Watercolor Mediums, COLDPRS GROUND 237ML - Applying this ground to a variety of substrates creates a surface that has the appearance of rough handmade paper. It's especially ideal for dry brush techniques. A smoother finish can also be achieved by skimming the surface with a wet palette knife during application.