Walnut growers set the stage for producing a safe, wholesome product by following established “Best Practices” in the Orchards known as Good Agricultural Practices (GAP’s). During development, walnuts are uniquely protected by nature. Unlike most tree nuts, walnuts have both a protective hull and shell, which encase and help protect the kernel. Throughout the shelling process, rules established by the FDA called Good Manufacturing Practices (GMP’s), are stringently followed. These practices ensure walnuts are produced under the cleanest manufacturing conditions.