Finally, we have cracked the secret to healthy skin, hair and heart. And, it’s not anything fancy, but our good ol’ mustard oil. Well, the age-old wisdom of our parents and grandparents has been proven right – yet again. And this time, they are backed by scientific proof. But for the benefit of the uninformed, let’s quickly shed light on this golden-yellow liquid touted by many as the ‘most beneficial’ oil of the subcontinent.