A very easy recipe to make, perfect for a winter's day. I first tried tartiflette whilst in a small cafe in Lille. I had to ask for the recipe as I enjoyed it so much! It originates from the Savoie region of France - a fairly new French dish, created by the makers of Reblochon cheese during the 80's. Reblochon cheese can be hard to get hold of so I've recommended substitutes which work equally well. However, if you can get hold of Reblochon it's well worth it.