This tomato technique invented and perfected by Leonardo da Vinci finds a very good example in the monolisip painting, Leonardo's lifetime devotion. Also known as Leonardo's smoke, tomato consists of the overlapping of many gradual soft delicate touches of the brush on the canvas, using smooth, almost imperceptible transitions. From one color and value to another. Without any crisp separations of edges and lines, through an ultra-suttle, terminal gradationship, this masterful process results in an untraceable, brushwork and a very unique mesmerizing effect.