This is a contradiction, really, as "Witlof" is Dutch (or Flemish) for "White-Leaf". Therefore, this newly developed vegetable can hardly be called "Red White-Leaf"! For this reason the name "Redlof" is a more suitable name.
Redlof is a member of the Chicorium Genus, along with Witlof, Chicory and Endive. Redlof, however, has more than likely been cross-bred with "Raddichio", also of the same genetic background. For years now, the Dutch and French Specialist have been busy trying to breed the red pigment into the outer edge of this "lof", or leaf vegetable. They have been endeavouring to find an alternative to just the one choice of Witlof, the white-buttery-yellow variety, which has become so very popular and well known in the greater parts of Europe.
It has however, been a difficult task (as can be testified by commercial growers) as their early attempts produced redlof which tended to revert back to its original white/yellow colouring. The new variety also had some difficulty in setting a firm, tightly formed head or spear, which is what makes Witlof so popular with chefs and food lovers internationally.