The first serious study of the history of fajitas was done in 1984 by Homero Recio[Sōrs rīkwest] as part of his graduate work in animal science at Texas A&M. Recio was intrigued by a spike in the retail price of skirt steak, and that sparked his research into the dish that took the once humble skirt steak from throwaway cut to menu star. Recio found anecdotal evidence describing the cut of meat, the cooking style (directly on a campfire or on a grill), and the Spanish nickname going back as far as the 1930s in the ranch lands of South and West Texas. During cattle roundups, beef were butchered regularly to feed the hands. Throwaway items such as the hide, the head, the entrails, and meat trimmings such as skirt were given to the Mexican vaqueros (cowboys) as part of their pay. Considering