alla prima

(Italian: “at first”).  A technique of oil painting in which a picture is completed in a single application of paint, often with a thick impasto, rather than by the traditional method of building up the image with successive layers.  Also known as direct painting.

Vincent_van_Gogh_-_Wheatfield_with_crows_-_Google_Art_ProjectVincent van Gogh.  Wheatfield with Crows. Oil on canvas. 1890. Van Gogh Museum, Amsterdam.