It is a brand of oat-based foods produced by the American company Quaker Oats Company. Although today it is merged and diversified into other products, the name is still associated already with a generic value with the "oatmeal soup". The English word quaker (quaker "Quaker") was initially chosen as a sign of honesty of the product, since the followers of that religion could not lie.
It is the name of a registered trademark, world-renowned. Quaker (Quaker or Quaker) means friend and also tremor, in the English language. Name given to a member of a dissident Christian religious community, created by George Fox, in England and which was called The Religious Society of Friends or Church of Friends.