Do you like butter? Then this is the film for you. Follow a herd of cows grazing at the end of a rainbow to discover how their milk is turned into a crock of gold. Take a closer look at each stage of the scrupulously clean production line that creates Farmlea butter. Don't forget to listen out in the laboratory for sound effects that give you a tiny taste of the special effects wizardry of Roy Spence. This film is courtesy of Roy Spence and is held in the Irish Film Archive.