Grattage is an artistic technique that involves scraping or rubbing a surface to reveal underlying textures or colors. This method is often used in painting and printmaking, allowing artists to create unique patterns and effects. The term is derived from the French word "gratter," meaning "to scrape." The technique gained popularity in the early 20th century, particularly among Surrealist artists like Max Ernst. By applying paint to a surface and then scraping it away, artists can produce unexpected results, adding depth and complexity to their work. Grattage encourages experimentation and spontaneity in the creative process.